Qu Series Reference Guide
For Firmware Version V1.9
 Before starting please check www.allen-heath.com for the latest Qu
mixer firmware and documentation.
Publication AP9372
Limited One Year Manufacturer’s Warranty
Allen & Heath warrants the Allen &Heath -branded hardware product and accessories contained in the
original packaging ("Allen & Heath Product”) against defects in materials and workmanship when used
in accordance with Allen & Heath's user manuals, technical specifications and other Allen & Heath
product published guidelines for a period of ONE (1) YEAR from the date of original purchase by the
end-user purchaser ("Warranty Period").
This warranty does not apply to any non-Allen & Heath branded hardware products or any software,
even if packaged or sold with Allen & Heath hardware.
Please refer to the licensing agreement accompanying the software for details of your rights with
respect to the use of software/firmware (“EULA”).
Details of the EULA, warranty policy and other useful information can be found on the Allen & Heath
website: www.allen-heath.com/legal.
Repair or replacement under the terms of the warranty does not provide right to extension or renewal
of the warranty period. Repair or direct replacement of the product under the terms of this warranty
may be fulfilled with functionally equivalent service exchange units.
This warranty is not transferable. This warranty will be the purchaser’s sole and exclusive remedy and
neither Allen & Heath nor its approved service centres shall be liable for any incidental or
consequential damages or breach of any express or implied warranty of this product.
Conditions of Warranty
The equipment has not been subject to misuse either intended or accidental, neglect, or alteration
other than as described in the User Guide or Service Manual, or approved by Allen & Heath. The
warranty does not cover fader wear and tear.
Any necessary adjustment, alteration or repair has been carried out by an authorised Allen & Heath
distributor or agent.
The defective unit is to be returned carriage prepaid to the place of purchase, an authorised Allen &
Heath distributor or agent with proof of purchase. Please discuss this with the distributor or the agent
before shipping. Units returned should be packed in the original carton to avoid transit damage.
DISCLAIMER: Allen & Heath shall not be liable for the loss of any saved/stored data in products that
are either repaired or replaced.
Check with your Allen & Heath distributor or agent for any additional warranty information which may
apply. If further assistance is required please contact Allen & Heath Ltd.
Any changes or modifications to the equipment not approved by Allen & Heath could void the
compliance of the product and therefore the user’s authority to operate it.
Qu Series products comply with the European Electromagnetic
Compatibility directive 2004/108/EC and the European Low Voltage
directive 2006/95/EC.
Qu Series Reference Guide AP9372 Issue 9
Copyright © 2016 Allen & Heath. All rights reserved
ALLEN&HEATH
Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
Qu Mixer Reference Guide
2
AP9372 iss.9
IMPORTANT - Read before starting:
Safety instructions
Before starting, read the Important Safety Instructions printed on the sheet supplied with the
equipment. For your own safety and that of the operator, technical crew and performers, follow
all instructions and heed all warnings printed on the sheet and on the equipment panels.
System operating firmware
The function of the Qu mixer is determined by the firmware (operating software) that runs it.
Firmware is updated regularly as new features are added and improvements made. The
firmware version current when this guide was released is noted in the Contents section.
The latest firmware can be downloaded from the Allen & Heath website, transferred to USB key
and then loaded into the Qu mixer using the Firmware Update utility.

Check the Allen & Heath website for the latest version of Qu firmware.
Software licence agreement
By using this Allen & Heath product and the software within it you agree to be bound by the
terms of the relevant End User Licence Agreement (EULA), a copy of which can be found on
the Allen & Heath website ( www.allen-heath.com/legal ). You agree to be bound by the terms of
the EULA by installing, copying, or using the software.
Further information
Please refer to the Allen & Heath website for further information, knowledgebase and technical
support. You can join our Allen & Heath Digital Community to share knowledge and information
with other Qu users.
General precautions

To prevent damage to the controls and cosmetics, avoid placing heavy objects on the
control surface, obstructing movement of the motorised faders, scratching the surface or
touch screen with sharp objects, or rough handling and vibration.

Protect the equipment from damage through liquid or dust contamination. Avoid dust or
small objects getting into the fader slots. Cover the mixer when it is not being used for a
long period.

Computer and touch screen technology can be affected by extreme cold. If the
equipment has been stored in sub-zero temperatures allow time for it to reach normal
operating temperature before use at the venue. Recommended operating temperature
for Qu is 5 to 35 degrees Celsius.

Avoid using the equipment in extreme heat and direct sunlight. Make sure the mixer
ventilation slots are not obstructed and that there is adequate air movement around the
equipment.

Transport the Qu using a touring grade, purpose designed flightcase with adequate
foam lining and internal support for protection.

Clean the control surface with a soft brush and dry lint-free cloth. Do not use chemicals,
abrasives or solvents.

It is recommended that servicing is carried out only by an authorised Allen & Heath
agent. Contact details for your local distributor can be found on the Allen & Heath
website. Allen & Heath do not accept liability for damage caused by maintenance, repair
or modification by unauthorised personnel.
Qu Mixer Reference Guide
3
AP9372 iss.9
1. Packed contents
Qu Mixer
Qu-16/24/32 Guide AP10025 or
Qu-Pac Guide AP9815 or
Qu-SB Guide AP10287
Safety Sheet
AP9240/CL-1
• Read this before starting
Mains lead • Check this
is correct for your territory
Options and Accessories available
Remote Audio Racks
Provides remote audio over dSNAKE Cat5 cable digital snake.
AR2412 - 24 Mic/Line in, 12 Line out
AR84 - 8 Mic/Line in, 4 Line out
Part: GLD-AR2412
Part: GLD-AR0804
LEDlamp
Right angled 4-pin
XLR LED lamp with
built-in dimmer
AB168 - 16 Mic/Line in,
8 Line out Remote
AudioRack.
Part: AB1608
Part: LEDlampX
19” Rack Ear Kit for Qu-16
To mount the Qu-16 in a standard 19” rack or
flightcase. These fit over the plastic trims.
Part: QU-16-RK19
Cat5 cables
For use with dSNAKE remote
audio
AH8823 - 2m (6.6’) short patch
AH9651- 20m (66’) coil
AH9981- 50m (165’) drum
AH9650 - 100m (330’) drum
ME Personal Mixing System
ME-1 Personal Mixer
ME-U 10-port PoE hub
REGISTER YOUR PRODUCT online at:
Qu Mixer Reference Guide
4
Soft cover
Qu
AP9262 - Qu-16
AP9458 - Qu-24
AP9639 - Qu-32
Polyester carry bag
Qu-16 - AP9931
Qu-Pac - AP9933
Qu-Pad app for iPad
Qu-You app for iOS devices &
Android
Qu-Control app for iOS devices
Available from the Apple Store /
Google Play
www.allen-heath.com/register
AP9372 iss.9
2. Contents
1.
Packed contents .............................................................................................................................. 4
2.
Contents .......................................................................................................................................... 5
3.
Introduction...................................................................................................................................... 7
3.1
Overview and Features ........................................................................................................... 7
3.2
Qu Chrome Edition ................................................................................................................. 7
3.3
System Architecture and Processing ...................................................................................... 8
3.4
4.
Differences between the Qu models ..................................................................................... 10
Connection Overview..................................................................................................................... 13
4.1
Local Input Connections ....................................................................................................... 13
4.2
Local Output Connections .................................................................................................... 14
4.3
Other Connections ................................................................................................................ 14
4.4
5.
Powering up the mixer .......................................................................................................... 15
Connecting dSNAKE Remote Audio .............................................................................................. 16
5.1
Connecting to a remote AudioRack ...................................................................................... 16
5.2
Qu Systems .......................................................................................................................... 18
5.3
The ME Personal Mixing System .......................................................................................... 20
6.
Qu-16, 24, 32 Operational Overview .............................................................................................. 21
6.1
Fader Strips........................................................................................................................... 21
6.2
The Master Strip .................................................................................................................... 23
6.3
Working with the sends on faders: ........................................................................................ 24
7.
Qu-Pac Operational Overview ....................................................................................................... 25
8.
Note on Qu-SB .............................................................................................................................. 27
9.
Processing and Mix Functions ....................................................................................................... 27
10.
9.1
Channel Naming ................................................................................................................... 27
9.2
Channel Processing .............................................................................................................. 28
9.3
Working with the Processing: ............................................................................................... 28
9.4
Working with Processing Libraries: ....................................................................................... 28
9.5
Processing Libraries ............................................................................................................. 35
9.6
List of Factory Libraries ......................................................................................................... 36
9.7
Channel Routing ................................................................................................................... 37
9.8
Working with the Routing screens ........................................................................................ 37
9.9
Mix Routing ........................................................................................................................... 40
9.10
Working with the Matrix (Qu-24, Qu-32, Qu-SB, Qu-Pac) ..................................................... 40
9.11
Audio Groups ........................................................................................................................ 41
9.12
Working with the Groups (Qu-24, Qu-32, Qu-SB, Qu-Pac) ................................................... 42
9.13
Mute and DCA Groups .......................................................................................................... 43
9.14
Using Mute Groups ............................................................................................................... 44
9.15
Using DCA Groups ............................................................................................................... 45
Touch Screen Mixing Functions .................................................................................................... 46
10.1
Copy, Paste, Reset keys ....................................................................................................... 48
10.2
The Sel screens – Processing and Routing .......................................................................... 49
10.3
Home Screen ........................................................................................................................ 49
10.4
Home Screen – User ............................................................................................................. 50
10.5
Home Screen – Meters ......................................................................................................... 51
10.6
Home Screen – RTA.............................................................................................................. 51
10.7
Home Screen – Qu-Drive (USB audio).................................................................................. 52
Qu Mixer Reference Guide
5
AP9372 iss.9
11.
12.
10.8
The FX ................................................................................................................................... 55
10.9
Working with FX – Adding vocal reverb: ............................................................................... 57
10.10
Scene Memories ................................................................................................................... 58
Touch Screen Setup Functions ..................................................................................................... 61
11.1
Audio Setup - PAFL............................................................................................................... 61
11.2
Audio Setup - Talkback ......................................................................................................... 62
11.3
Audio Setup –Signal Generator ............................................................................................ 62
11.4
Audio Setup - Automatic Mic Mixer (AMM) ........................................................................... 63
11.5
Working with the AMM .......................................................................................................... 65
11.6
Control Setup – Custom Layer .............................................................................................. 66
11.7
Control Setup - SoftKeys....................................................................................................... 67
11.8
Control Setup - Network........................................................................................................ 68
11.9
Control Setup - MIDI ............................................................................................................. 68
11.10
Control Setup - Preferences .................................................................................................. 69
11.11
USB Data – Scene Transfer .................................................................................................. 70
11.12
USB Data – Library transfer ................................................................................................... 70
11.13
USB Data – Show transfer..................................................................................................... 71
11.14
I/O Patch Setup – Surface ..................................................................................................... 72
11.15
I/O Patch – dSNAKE In.......................................................................................................... 72
11.16
I/O Patch Setup – dSNAKE Out ............................................................................................ 73
11.17
I/O Patch Setup - Monitor...................................................................................................... 74
11.18
I/O Patch Setup – USB Audio................................................................................................ 75
11.19
Utility - Calibration ................................................................................................................. 76
11.20
Utility – Qu-Drive ................................................................................................................... 76
11.21
Utility – Firmware Update ...................................................................................................... 77
USB Audio Interface and DAW Control .......................................................................................... 78
12.1
Audio streaming .................................................................................................................... 78
12.2
DAW Control ......................................................................................................................... 79
13.
Qu-Pac Qu-Control Screen ............................................................................................................ 80
14.
iOS Apps for Wireless Control ....................................................................................................... 81
15.
Resetting the Mixer ........................................................................................................................ 83
16.
15.1
Reset Mix Settings – A starting point for mixing .................................................................... 83
15.2
System Hard Reset ............................................................................................................... 84
Specifications ................................................................................................................................ 85
16.1
Installing Qu-16, Qu-24, Qu-32 ............................................................................................. 85
16.2
Installing Qu-Pac ................................................................................................................... 86
16.3
Installing Qu-SB .................................................................................................................... 87
16.4
Qu-16 System Block Diagram ............................................................................................... 88
16.5
Qu-24 and Qu-32 System Block Diagram ............................................................................. 89
16.6
Qu-Pac System Block Diagram ............................................................................................. 90
16.7
Qu-SB System Block Diagram .............................................................................................. 91
16.8
System Specifications ........................................................................................................... 92
Qu Mixer Reference Guide
6
AP9372 iss.9
3. Introduction
3.1 Overview and Features
Building on the heritage of the GLD and flagship iLive digital consoles, the Qu presents exceptional
performance together with an intuitive analogue style user interface with a motorised fader per channel,
knobs and touch screen, total recall of all settings, full input, output and FX processing, USB streaming
and hard drive multitrack recording, digital snake capability and remote wireless control using an iPad.
There are five models in the Qu Series:
Qu-16 – Compact, rack mountable mixer with 16 mic and 3 stereo line input channels.
Qu-24 – Larger model with 24 mic and 3 stereo inputs. Adds stereo Groups, Matrix and more SoftKeys.
Qu-32 – Largest model with 32 mic and 3 stereo inputs. Adds 2 more stereo Groups.
Qu-Pac – Rack mountable version of the Qu-32 without faders, for iPad and front panel control.
Qu-SB – Rack mountable version of the Qu-32 without faders and front panel controls, for iPad control.
Qu-16
Qu-24
Qu-32, Qu-Pac, Qu-SB
 16 Mic/Line channels
 24 Mic/Line channels
 32 Mic/Line channels
 3 stereo channels
 3 stereo channels
 3 stereo channels
 24 sources to the mix
 32 sources to the mix
 40 sources to the mix
 12 mixes (4 mono, 3 stereo, LR)
 12 mixes (4m, 3(5)st, LR)
 12 mixes (4m, 3(7)st, LR)
 4 FX (2 send buses)
 4 FX (4 send buses)
 4 FX (4 send buses)
 24 out, 22 in USB streaming
 32 out, 30 in USB
 32 out, 32 in USB
 2 stereo Groups (mix mode)
 4 stereo Groups (mix mode)
 2 stereo Matrix
 2 stereo Matrix
3.2 Qu Chrome Edition
Qu Chrome Edition introduced a fresh new look for the Qu range with high contrast chrome
rotary and fader knobs that also improve visibility in dark conditions. Qu Chrome coincided
with the release of new firmware V1.8, which introduced several new features and
improvements. Qu hardware and memory files remain fully compatible between editions.
Existing black knob Qu mixers can be updated to latest firmware and can also be upgraded to
Chrome standard by ordering the following kit from Allen & Heath:
004-742JIT
004-743JIT
004-744JIT
Qu Mixer Reference Guide
KIT QU-16 CHROME CONVERSION
KIT QU-24 CHROME CONVERSION
KIT QU-32 CHROME CONVERSION
7
AP9372 iss.9
3.3 System Architecture and Processing
The following diagrams show the Qu-16, Qu-24, Qu-32, Qu-SB and Qu-Pac I/O (inputs and
outputs), audio architecture and processing available. The difference between the models and the
routing capability of each processing section is illustrated. Refer also to the more detailed System
Block Diagrams at the rear of this guide.
Qu-16
SIGNAL FLOW
Mic/Line Inputs
1 ---------- 16
Mic
Line
ST1
L/M
PREAMP
GAIN
48V
Cat5 Digital Snake to AudioRack and ME Personal Monitor System
dSNAKE
Line Inputs
ST2
L/M
ST3
Playback
LR, 18 trk
Qu-Drive
USB B
L/R
R
Stream
22 ch
R
Local Inputs
or
PAFL
0
L
R
R
Local Outputs
LR post
Route to:
FADER
ASSIGN
PAN PRE/POST
L
R
SENDS
MUTE
LR
MIX Sends
FX Sends
DIR OUT
DELAY
PAFL
Output PATCH
PAFL MONITOR
RTA
AMM (CH1-16)
Ducker
GATE PEQ COMP DELAY
L
Mix
Input Channels 1-16, ST1-3
FX
Mix 1-----------10
Main LR
USB dSNAKE
Inputs
AES Out
2Trk Alt Out
Stream
24 ch
dSNAKE USB
Channel SOURCE
TRIM POL Insert HPF
Line Outputs
Record
LR, 18 trk
PFL TRIM
PHONES
PAFL
FX
FX Send 1-2
MUTE
FX Return 1-4
Insert
FADER ASSIGN
PRE/POST
SENDS
PEQ
FX 1-4
MUTE
FADER
L
PAN
PAFL
ASSIGN
PRE/POST
R
SENDS
GAIN
Mic
HPF
LR
MIX Sends
FX Sends
Insert
FX
TALK ASSIGN
SIG GEN
Sine
LEV
Pink
MUTE
ASSIGN
White
Bandpass
Mic
Line
PREAMP
GAIN
48V
L/M
Main LR
Line Inputs
ST2
L/M
ST3
Playback
LR, 18 trk
Stream
30 ch
R
Qu-Drive
or
AMM (CH1-16)
GATE PEQ COMP DELAY
0
COMP DELAY
MUTE
FADER
Route to:
USB B
Line Outputs
Grp 1---4(8)
Mix 1---------------10
Main LR
MTX 1---4
Stream
32 ch
USB dSNAKE
Outputs
MUTE
FADER
PAN ASSIGN
L
R PRE/POST
SENDS
AES Out
2Trk Alt Out
L
L
R
R
Local Outputs
Mix
PAFL
Ducker
GEQ
Record
LR, 18 trk
dSNAKE USB
Input Channels 1-24, ST1-3
FX
PEQ
PAFL
Output BAL
L
R
Outputs
Cat5 Digital Snake to AudioRack and ME Personal Monitor System
Inputs
TRIM POL Insert HPF
FADER
dSNAKE
Local Inputs
Channel SOURCE
MUTE
Route to:
LR
MIX
L/R
R
COMP DELAY
PAFL
Output BAL
L
R
Route to:
Qu-24(32) SIGNAL FLOW
ST1
GEQ
LR
MIX
Insert
FX
Mic/Line Inputs
1 ------ 24(32)
PEQ
Route to:
TALKBACK
Talkback
Mix - Mono 1-4, Stereo 5-6, 7-8, 9-10
Route to:
Masters
Group 1-2, 3-4, (5-6, 7-8)
Route to:
GRP
LR
MIX Sends
FX Sends
DIR OUT
FX or Ducker
Insert
PEQ
GEQ
COMP DELAY
MUTE
FADER
L
PAN
R
LR post
Output PATCH
PAFL
Output BAL
L
R
Route to:
ASSIGN
PRE/POST
SENDS
Outputs
LR
MIX Sends
FX Sends
MTX Sends
FX
FX Send 1-4
MUTE
FX Return 1-4
Insert
FADER ASSIGN
PRE/POST
SENDS
PEQ
FX 1-4
MUTE
FADER
RTA
DELAY
PAFL MONITOR
PFL TRIM
PHONES
PAFL
ASSIGN
R PRE/POST
SENDS
TALKBACK
Talkback
Mic
L
PAN
PAFL
GAIN
HPF
TALK ASSIGN
SIG GEN
Sine
LEV
Pink
MUTE
ASSIGN
White
Bandpass
Mix - Mono 1-4, Stereo 5-6, 7-8, 9-10
Route to:
GRP
LR
MIX Sends
FX Sends
Route to:
GRP
LR
MIX
MTX
PEQ
GEQ
Insert
FX
PEQ
GEQ
Route to:
GRP
LR
MIX
MTX
8
COMP DELAY
MUTE
FADER
Main LR
COMP DELAY
MUTE
FADER
Matrix 1-2, 3-4
PAFL
Qu Mixer Reference Guide
Insert
FX
Insert
FX
PEQ
GEQ
COMP DELAY
MUTE
FADER
PAFL
Output BAL
L
R
ASSIGN
PRE/POST
SENDS
PAFL
Output BAL
L
R
ASSIGN
PRE/POST
SENDS
PAFL
Output BAL
L
R
Route to:
Outputs
MTX Sends
Route to:
Outputs
MTX Sends
Route to:
Outputs
ASSIGN
PRE/POST
SENDS
AP9372 iss.9
SIGNAL FLOW
Mic/Line Inputs
1 ------ 16
Line
Line Inputs
ST2
L/M
ST3
ST1
L/M
PREAMP
GAIN
48V
Mic
Cat5 Digital Snake to AudioRack and ME Personal Monitor System
Stream
32 ch
R
Local Inputs
USB B
Record
Stereo, 18 trk
or
AMM (CH1-16)
Ducker
TRIM POL Insert HPF
PAFL
GATE PEQ COMP DELAY
0
MUTE
L
L
R
R
Local Outputs
Mix
Input CH1-32, ST1-3
FX
Mix 1-----------10
Main LR
USB dSNAKE
Inputs
AES Out
2Trk Alt Out
Stream
32 ch
dSNAKE USB
Channel SOURCE
CH17-32, Group and MTX Outputs
Line Outputs
Qu-Drive
Playback
Stereo, 18 trk
L/R
R
Remote access to any Input/Output including:
dSNAKE
Masters
Group 1-2, 3-4, 5-6, 7-8
Route to:
FX or Ducker
GRP
LR
ASSIGN MIX Sends
PAN
L
R PRE/POST FX Sends
SENDS
DIR OUT
Virtual
FADER
Insert
GEQ
PEQ
COMP DELAY
MUTE
Virtual
FADER
L
PAN
R
LR post
Output PATCH
PAFL
Output BAL
L
R
Route to:
Outputs
LR
MIX Sends
FX Sends
MTX Sends
ASSIGN
PRE/POST
SENDS
FX
FX Send 1-4
FX Return 1-4
Insert
Virtual
FADER ASSIGN
MUTE
PRE/POST
SENDS
PEQ
FX 1-4
MUTE
Virtual
FADER
L
GAIN
Mic
PAFL MONITOR
PFL TRIM
DELAY
HPF
ASSIGN
R PRE/POST
SENDS
TALK ASSIGN
SIG GEN
Sine
LEV
Pink
MUTE
ASSIGN
White
Bandpass
PHONES
PAFL
Mono 1-4, Stereo 5-6, 7-8, 9-10 Mix
Route to:
TALKBACK
Talkback
RTA
PAN
PAFL
GRP
LR
MIX Sends
FX Sends
Insert
FX
Route to:
GRP
LR
MIX
MTX
Insert
FX
Mic
Line
or
Stream
32 ch
R
PAFL
AMM (CH1-16)
GATE PEQ COMP DELAY
0
USB B
dSNAKE USB
Inputs
Ducker
TRIM POL Insert HPF
Insert
FX
MUTE
Virtual
FADER ASSIGN
PRE/POST
SENDS
RTA
DELAY
MUTE
PEQ
GEQ
COMP DELAY
MUTE
MUTE
Virtual
FADER
ASSIGN
PAN
L
R PRE/POST
SENDS
FX Return 1-4
PEQ
MUTE
Virtual
FADER
L
PAN
PAFL
ASSIGN
R PRE/POST
SENDS
SIG GEN
Sine
LEV
Pink
MUTE
ASSIGN
White
Bandpass
MONITOR
Virtual
FADER
Virtual
FADER
ASSIGN
PRE/POST
SENDS
PAFL
Output BAL
L
R
ASSIGN
PRE/POST
SENDS
PAFL
Output BAL
L
R
Route to:
Outputs
MTX Sends
Route to:
Outputs
MTX Sends
Route to:
Outputs
ASSIGN
PRE/POST
SENDS
Route to:
MTX1-2 out
Mix 1-----------10
Main LR
L
Stream
32 ch
R
USB dSNAKE
Insert
Local Outputs
Masters
Group 1-2, 3-4, 5-6, 7-8
FX or Ducker
GRP
LR
MIX Sends
FX Sends
DIR OUT
CH17-32, Group and MTX Outputs
Line Outputs
Record
Stereo, 18 trk
PEQ
GEQ
COMP DELAY
MUTE
Virtual
FADER
L
PAN
PAFL
Output BAL
L
R
R
ASSIGN
PRE/POST
SENDS
Groups can be used to provide extra stereo mixes
Group (routing, stereo sub-groups)
Mix (stereo sends)
Insert
FX 1-4
COMP DELAY
Remote access to any Input/Output including:
Mix
FX
FX Send 1-4
GEQ
Qu-Drive
Playback
Stereo, 18 trk
Input CH1-32, ST1-3
FX
MUTE
PAFL
Output BAL
L
R
Cat5 Digital Snake to AudioRack and ME Personal Monitor System
L/M
Local Inputs
Channel SOURCE
COMP DELAY
Matrix 1-2, 3-4
dSNAKE
Line Input
ST1
PREAMP
GAIN
48V
PEQ
Route to:
GRP
LR
MIX
MTX
SIGNAL FLOW
Mic/Line Inputs
1 ------ 16
GEQ
Main LR
PAFL
Qu-SB
PEQ
Virtual
FADER
Output PATCH
Route to:
Outputs
LR
MIX Sends
FX Sends
MTX Sends
GROUP MODE
Route to:
GRP
LR
MIX Sends
FX Sends
Mono 1-4, Stereo 5-6, 7-8, 9-10 Mix
Insert
FX
PEQ
GEQ
COMP DELAY
Main LR
Route to:
GRP
LR
MIX
MTX
Insert
FX
PEQ
GEQ
COMP DELAY
PAFL
Virtual Output BAL
R
FADER L
MUTE
ASSIGN
PRE/POST
SENDS
PAFL
Virtual Output BAL
R
FADER L
MUTE
ASSIGN
PRE/POST
SENDS
Route to:
Outputs
MTX Sends
Route to:
Outputs
MTX Sends
PHONES
PFL TRIM
Matrix 1-2, 3-4
PAFL
PAFL
Qu Mixer Reference Guide
9
Insert
FX
PEQ
GEQ
COMP DELAY
MUTE
PAFL
Virtual Output BAL
R
FADER L
ASSIGN
PRE/POST
SENDS
Route to:
Outputs
AP9372 iss.9
3.4 Differences between the Qu models
All four models operate in the same way and have a similar touch screen menu structure. The
larger models add Groups and Matrix. Other differences are shown here:
Qu-16
Qu-24
4 SoftKeys
Shelf for iPad
2 Group masters
2 Matrix masters
10 SoftKeys
SoftKeys
16 fader strips
2 FX sends, no Groups
24 fader strips
4 FX sends, 2 stereo Groups
LED colour strips to identify layer
D colour strips to identify layer
Qu-32
4 Group masters
Larger Touch Screen
32 fader strips
Qu Mixer Reference Guide
2 Matrix masters
4 DCA Group masters
4 stereo Group mix selects
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AP9372 iss.9
Qu-Pac
Qu-Pac is the mix engine of the Qu-32 in a compact rack mountable format. It has the same local
connections as the Qu-16 and can be expanded to use the additional Qu-32 channels and outputs
by adding dSNAKE AudioRacks. It does not have faders, however all channels and functions can
be controlled directly from the front panel using its touch screen.
15 SoftKeys
Custom assignable Select keys
Custom assignable Qu-Control screen for installed sound control
Channel screen provides selection and virtual fader strip
Qu-SB
Qu-SB is the mix engine of the Qu-32 in a compact rack mountable format. It has similar
connections to the Qu-Pac and can be expanded to use the additional Qu-32 channels and
outputs by adding dSNAKE AudioRacks. It does not have any local control and is intended
exclusively for iPad wireless control.
Qu Mixer Reference Guide
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AP9372 iss.9
Qu-16 16 Mic/Line
Qu-24 24 Mic/Line in
in
24 out, 22 in USB audio streaming
32 out, 30 in USB audio streaming
4 Group out
Matrix out
Qu-32 32 Mic/Line in
32 out, 32 in USB audio streaming
8 Group out
Matrix out
Qu-SB 16 Mic/Line in
Qu-Pac 16 Mic/Line in
32 out, 32 in
USB audio
streaming
1 st Matrix Out
32 out, 32 in USB
audio streaming
Use dSNAKE to access up to 32
Mic/Line in and other mix outs
1 st Line Input
Scene, Library and Show memories - All Qu mixer memories are compatible. Files created on
one model can be transferred via USB key and loaded on the other. The extra features of the
bigger models will be ignored when their file is loaded on a Qu-16. The extra features of the bigger
models will be reset to factory default when a Qu-16 file is loaded.
 To be compatible, ensure all your Qu mixers are loaded with the same version of firmware.
Check the Allen & Heath web site for the latest firmware available.
USB Audio - A USB hard drive formatted on one model can be used on the other. Stereo and
multitrack Qu-Drive recordings are compatible. USB B audio streaming is compatible, but note that
Qu-16 is 24out/22in, Qu-24 is 32out/30in, and Qu-32, Qu-Pac and Qu-SB are 32out/32in.
Firmware – The same version but different firmware download is needed for each model. Choose
either the Qu-16, Qu-24, Qu-32, Qu-Pac or Qu-SB file when downloading firmware from the Allen &
Heath web site. The procedure for updating firmware is the same for all models.
Qu-Pad and Qu-You apps - These apps are compatible with all Qu mixers. They identify the
model and load the appropriate controls when you log in. Qu-Pad is available for iOS devices. QuYou is available for iOS and Android devices.
 Make sure the app version and mixer firmware versions are compatible.
Qu Mixer Reference Guide
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AP9372 iss.9
4. Connection Overview
The following connections are available on the rear panel of the Qu mixer. The Qu-16 is shown here.
AES digital out
(not Qu-SB)
2-Trk and Alt out
(not Qu-SB)
Lamp (not Qu-SB)
LR main out
Analogue Mix outputs
Mic and Line inputs
Talkback
Mic in (not
Qu-SB)
ST1 and ST2
stereo line in
(not Qu-SB)
Kensington
Lock
Cable
clamp
dSNAKE remote audio
Power On/Off
Network
USB B streaming
Mains fuse
Mains power input
4.1 Local Input Connections
Mono Line Input – Balanced ¼” TRS (Tip, Ring,
Sleeve) jack input for plugging in line level signals such as
multitrack players and radio mic receivers. To work with
unbalanced sources use a mono jack or link ring to sleeve
within the TRS stereo jack.
Use DI boxes plugged into the Mic input for high
impedance, low level sources such as acoustic instrument
pickups.
Microphone Input – Balanced XLR input for plugging
Pin2 = hot
in a low level source such as a microphone or DI box. 48V
can be switched to the socket for condenser mics and active
DI boxes that require phantom power.
 To avoid loud thumps, mute the channel before plugging
in cables or equipment while 48V is turned on.
Stereo Line Input – ST1 and ST2 balanced ¼” TRS
(Tip, Ring, Sleeve) jack inputs for plugging in line level
stereo sources such as CD players (ST2 not provided on
Qu-SB). The L input normals (switches) through the R input
so that you can work with a mono source by plugging into
just the L/M input.
To work with RCA phono connections use jack to RCA
converter plugs.
Talkback Input – Dedicated balanced XLR input for
plugging in a microphone to route to the mixes for the
engineer to talk to the performers on stage. Phantom power
can be switched to the socket for condenser microphones.
The Talkback Input is not provided on Qu-SB.
Qu Mixer Reference Guide
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AP9372 iss.9
4.2 Local Output Connections
Group, Mix, Matrix outputs – Balanced XLR line
level outputs for the mono and stereo mixes, for example to
feed monitor amplifiers, external processing devices, delay
fill speaker systems and recording devices. These use low
impedance, high quality differential driver circuits for
connection to +4 or 0dBu equipment. Maximum output is
+22dBu.
Pin2 = hot
Professional equipment provides ‘balanced’ connections for
maximum interference rejection over long cable runs. If you
are connecting to ‘unbalanced’ equipment then make sure
the XLR pin 3 (signal cold) is linked to pin 1 (signal ground).
Main LR output – Balanced XLR line level outputs for
the main Left and Right stereo mix. These typically plug into
the FOH speaker processor, amplifier or powered speakers.
AES out – 2-channel digital output using a single XLR
connection and standard mic (2-core screened) audio cable.
It follows the AES (Audio Engineering Society) digital audio
standard and can connect to any equipment fitted with an
AES input socket. The source to this output is patched using
the Setup / Output Patch / Surface screen. Applications
include the feed to a PA speaker processor, amplifier, stereo
broadcast or recording device equipped with AES input.
Alt out – Stereo ‘alternative’ output on balanced TRS
jacks for connection to +4 or 0dBu equipment such as zone
feeds, fill speakers, broadcast or local monitor. The source
to this output is patched using the Setup / Output Patch /
Surface screen.
2TRK out – Stereo output on balanced TRS jacks for
connection to +4 or 0dBu equipment such as stereo
recorders. It follows the post master fader main LR mix.
 The AES out, Alt out and 2TRK out are not provided on
Qu-SB.
4.3 Other Connections
Lamp – Plug in a 4-pin gooseneck lamp to illuminate the
mixer surface. You can use any industry standard 12V, 5W
or lower power lamp. We recommend the Allen & Heath
LEDLamp with built-in thumbwheel dimmer. The Lamp
connector is not provided on Qu-SB.
USB B – Type B USB connection for multi-channel
bi-directional audio streaming between the mixer and a
computer. Follows the high speed USB 2.0 standard.
Refer to the Allen & Heath web site for information on
Windows® and Apple® Mac drivers available for Qu.
Network – Fast Ethernet (100 Mbit/s) port for Cat5 cable
connection to a computer for MIDI over TCP/IP control of
mixer parameters, or to a wireless router (access point) for
live mixing control using the Allen & Heath Qu-Pad app
running on an iPad, and Qu-You personal monitoring app.
The Lnk indicator flashes to indicate network activity.
dSNAKE – The proprietary Allen & Heath ‘digital snake’
connection for remote audio using an AR2412, AR84 or
AB168 AudioRacks, and for personal monitoring using the
ME Personal Mixing System.
Qu Mixer Reference Guide
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AP9372 iss.9
4.4 Powering up the mixer
The Qu mixer has an internal universal voltage power supply
unit. This means you can use your mixer in most parts of the
world without the need to modify the unit as long the local
mains supply is within the range:
Mains Voltage =
100 to 240 V.AC
Mains Frequency =
47 to 63Hz
 Important - Before starting, read the Safety Instructions
Sheet packed with the mixer and safety notes printed on the
mixer.
AC MAINS IN – Standard IEC socket for connecting the
mixer to the local mains supply. Plug in a mains lead with
moulded plug suitable for your territory. A suitable mains
lead is shipped with the mixer.
 Do not replace the mains plug or modify the lead in any
way. For your own safety and that of the operator and
performers do not remove or defeat the ground connection.
A cable clamp is provided. You can slot the cable into this
or lock it in place. To lock the cable use a star head Torx
T20 screwdriver to refit the clamp around the cable.
Fuse – Mains input fuse to protect the mixer circuits in the
unlikely event of a failure or excessive power surge. If you
need to replace the fuse always use one of the same type
and rating as printed on the rear panel. If the replacement
fuse blows then refer to your authorised Allen & Heath
service agent for advice.
Power ON/OFF switch – Press to switch the mixer
on. Press again to switch it off.
Switching the mixer on – Press the ON/OFF switch.
The blue Power indicator lights. The mixer takes just a few
seconds to boot up. It restores its previous settings. LR mix
is selected and it’s processing shown on the screen.
 To avoid loud thumps, do not switch the mixer on or off
while the PA speakers are powered. Always switch the
amplifiers on last, and switch them off first.
Switching the mixer off – First select the Home
screen. Touch Shut Down to safely complete processes
such as parameter storing and USB data transfer or
recording. Once complete, press the ON/OFF switch to turn
the mixer off.
Qu Mixer Reference Guide
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AP9372 iss.9
5. Connecting dSNAKE Remote Audio
The Qu mixer provides local sockets on its rear panel for all audio inputs and outputs. It can also work
with remote audio by connecting over a single cable ‘digital snake’ to an Allen & Heath AudioRack, or to
the Allen & Heath ME Personal Mixing System.
5.1 Connecting to a remote AudioRack
The Qu can connect to an Allen & Heath AudioRack so that the audio can be plugged into a rack on
stage and routed to the mixer over a single Cat5 cable ‘digital snake’ plugged into its dSNAKE port.
The ‘digital snake’ – dSNAKE provides a convenient,
single Cat5 cable alternative to the typical heavy
analogue copper multicore to connect many inputs
and outputs on stage. One cable carries multiple
channels of audio in both directions together with
remote control of the preamps.
dSNAKE carries:




Up to 38 remote input signals
Up to 16 remote output signals
40 personal mixing sends
Preamp control – Gain, Pad, 48V
Cat5 cable – Use STP (shielded twisted pair) Cat5e or
higher cables. Those with both foil and braided
screens provide shielding from interference and are
generally more rugged. Stranded core cables are less
prone to damage when kinked or repeatedly coiled.
The Qu mixer provides a locking Neutrik
EtherCon socket to protect the
connections and ensure suitability for
touring. Use a touring grade cable fitted
with locking EtherCon plugs.
Maximum cable length = 120m (396’)
depending on cable type. Recommended
maximum length = 100m (330’).
Remote Inputs - dSNAKE inputs are mapped one-toone to the Qu input channels. They are not patchable.
 dSNAKE does not add channels to the mixer.
Choose either Local (rear panel) or dSNK (remote)
input for each channel.
Remote Outputs - Qu outputs can be patched to the
output sockets on the remote racks. These duplicate
the outputs on the Qu rear panel.
Connecting Qu to the AudioRack – Plug one end of
your Cat5 ‘digital snake’ into the Qu mixer dSNAKE port. Plug the
other end into the dSNAKE port of the AudioRack.
Connecting a second AudioRack – The AR2412 and
AB168 AudioRacks include an EXPANDER port. You can use this
to connect to an AR84 or AB168 AudioRack.
 The AR2412 AudioRack cannot be used as an expander in a
Qu system.
 You can connect up to two AudioRacks in a Qu system. This
includes the main rack and one expander rack.
Once connected and powered up, the Qu touch screen should
display the ‘dS’ icon in its toolbar to show that one or more
dSNAKE devices are recognised by the system.
Qu Mixer Reference Guide
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AP9372 iss.9
Available AudioRacks:
AB168
16 Mic/Line in, 8 Line out - Floor, shelf or rack mount
The AB168 AudioRack can be used as a stage box on the floor or a surface, or mounted in a 19” rack
using the optional rack ears.
EXPANDER – To connect to a
second AB168 to add more
input and output sockets. Also
compatible with the Allen &
Heath ME personal mixing
system.
dSNAKE – To connect to the Qu
mixer using a Cat5 digital snake.
AR2412
24 Mic/Line in, 12 Line out - Rack mount
EXPANDER – To connect to an
AR84 or AB168 to add more
input and output sockets.
MONITOR – To connect to the
Allen & Heath ME personal
mixing system.
dSNAKE – To connect to the
Qu mixer using a Cat5 digital
snake.
AR84
8 Mic/Line in, 4 Line out - Rack mount
EXPANDER – To connect to
the Expander port of the
AR2412, or connect directly to
the Qu mixer via its dSNAKE
port.
Inputs – Use the Preamp screen Fn key Source page
to choose either the local (rear panel) socket or a
remote (dSNAKE) socket for each channel source.
Red buttons show local sources selected, yellow
buttons show dSNAKE sources.
Any dSNAKE input socket can be patched to any
channel using the Setup / I/O Patch / dSNAKE In
screen. Sockets can be patched to more than one
channel.
The Qu-16, 24, 32 reset default is one-to-one mapping
of local sockets to the channels.
The Qu-Pac and Qu-SB reset default is one-to one
mapping of local sockets to CH1-16, and dSNAKE 116 sockets to CH17-32.
 Adding an AudioRack does not expand the number
of Qu channels available.
Outputs – The Qu mixer outputs will appear
simultaneously at its rear panel sockets and also at the
sockets on the remote rack. AudioRack output sockets
are patchable. Qu outputs can be patched to the rack
sockets using the Setup / I/O Patch / dSNAKE Out
screen.
Qu Mixer Reference Guide
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AP9372 iss.9
5.2 Qu Systems
The Qu mixer has sockets for all its inputs and outputs on its rear panel and can therefore be used
without any additional rack. However, if you wish to use a digital snake to connect remote stage audio to
the mixer using a single Cat5 cable then there are several rack options available. The following diagrams
show suggested combinations:
Qu-16 – All inputs and outputs
are available locally. Use on
stage or with an analogue
snake.
Qu-16
Qu-16+AR84 – 8 remote inputs.
Provides 4 outputs, ideal for
feeding a stereo PA and two
monitors.
Qu-16
Qu-16+AR2412 – Access all
inputs and outputs near the
stage. ST1-3 provide stereo mic
inputs.
Qu-16
dSNAKE
dSNAKE
CH1-8
AR84
Out1-4
Qu-16+AB168 – Provides a
rugged digital snake and stage
box for all 16 mic inputs and up
to 8 returns.
Qu-16
AR2412
dSNAKE
CH1-16
Out1-8
CH1-16
AB168
Out1-12
Qu-16+2x AB168 – A second
stage box expands the first to
access ST1-3 on its first 6 inputs
and provides more outputs.
Inputs 7-16 are not used.
Qu-16
dSNAKE
1-16 = CH1-16
17-22 = ST1-3
23-24 = unused
1-6 = ST1-3
7-16 = unused Out9-16
Out1-8
AB168
EXPANDER
Qu-24 – All inputs and outputs
are available locally.
Qu-24
Qu-24+AR84 – 8 remote inputs.
Provides 4 outputs
Qu-24+AR2412 – Access all 24
mic inputs near the stage.
Qu-24
Qu-24
dSNAKE
dSNAKE
CH1-24
CH1-8
AR84
Qu-24+AR2412+AR84 – Adds
the ST1-3 stereo mic inputs near
the stage.
Qu-24
dSNAKE
Qu-24+AB168 – Digital snake
for 16 mic inputs on stage.
Qu-24
dSNAKE
CH1-24
Out1-12
AR2412
Qu-24+2x AB168 – Expands
with a second stage box to
access all inputs.
Qu-24
dSNAKE
CH1-16
EXPANDER
AR2412
AR84
Out1-4
Out1-12
Out1-8
AB168
CH1-16
Out1-8
1-8 = CH17-24
9-14 = ST1-3
15-16 = unused Out9-16
AB168
EXPANDER
1-6 = ST1-3
7-8 = unused Out13-16
Qu Mixer Reference Guide
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AP9372 iss.9
Qu-32 – All inputs and outputs
Qu-32+AR84 – 8 remote inputs.
Provides 4 outputs
Qu-32+AR2412 – Access to 24
mic inputs near the stage.
Qu-32
Qu-32
Qu-32
are available locally.
dSNAKE
Qu-Pac and Qu-SB –
dSNAKE
CH1-24
Same engine as Qu-32 but have
16 inputs available locally. Use
dSNAKE to access the others.
CH1-8
AR84
Qu-32+AB168 – Digital snake
for 16 mics on stage.
Qu-32
Out1-4
Out1-12
AR2412
Qu-32+2x AB168 – Add a
second AB168 for 32 mics on
stage.
Qu-32
dSNAKE
dSNAKE
CH1-16
CH1-16
Out1-8
AB168
Out1-8
CH17-32 Out9-16
AB168
EXPANDER
Qu-32+AR2412+AR84 –
Provides all 32 mic inputs near
the stage.
Qu-32
Qu-32+AR2412+AB168 –
Access to all inputs including
stereos.
Qu-32
dSNAKE
dSNAKE
CH1-24
Out1-12
CH1-24
EXPANDER
AR2412
1-8 = CH25-32
9-14 = ST1-3
15-16 = unused Out9-16
Out1-12
AR2412
EXPANDER
AR84
CH25-32
Out13-16
ME Personal Mixing System – The Qu system can interface directly or via the ME-U hub to ME-1 personal
mixers using any available dSNAKE, EXPANDER or MONITOR port.
Qu Mixer
Qu Mixer
dSNAKE
Qu Mixer
Qu Mixer
dSNAKE
dSNAKE
dSNAKE
AB168
AR2412
EXPANDER
AB168
EXPANDER
EXPANDER
MONITOR
ME System
Parallel connection
Use the ME-U hub or a
standard PoE hub to
power and connect to
several ME-1 mixers
using individual Cat5
cables.
ME System
ME-U hub
Qu Mixer Reference Guide
ME System
ME System
Daisy chain connection
ME-D
ME-1
PSU
PSU
PSU
PoE
ME-1
19
Connect to Link In of the
first ME-1 mixer. Connect
its Link Out to daisy chain
to the next. Use the power
units provided with each
ME-1 mixer.
AP9372 iss.9
5.3 The ME Personal Mixing System
The Allen & Heath ME Personal Mixing System can be used with the Qu mixer. This provides
customisable personal monitor control for individual musicians and performers on stage.
ME-1 personal mixer – A compact personal mixer
able to work with up to 40 channels. Features built-in
headphones and monitor output. Intuitive and easy to
operate, its 16 select keys can be configured to
provide as much or as little control as the musician
needs.
The 40 ME channels are mapped from the Qu input
channel direct outputs, FX and mixes to dSNAKE. Qu
sends audio and stereo status information. Channels
can be chosen and grouped to ME-1 keys using the
setup function available on the ME-1 mixer.
Multiple ME-1 mixers can be connected in series
(daisy chained) by linking the output of one to the
input of the next. Alternatively, they can be connected
in parallel and powered over their Cat5 cables using a
standard PoE Ethernet switch or the Allen & Heath
ME-U hub. The ME connects directly to a dSNAKE
compatible port using a Cat5 cable.
Connecting ME to an AR2412 or AB168 AudioRack - ME-1 mixers, a standard Ethernet switch or the
ME-U hub can be plugged into the AR2412 MONITOR or EXPANDER port, or AB168 EXPANDER port.
Power unit
Daisy chain
MONITOR port
EXPANDER port
dSNAKE
Connecting ME to the Qu mixer - ME-1 mixers, a standard Ethernet switch or the ME-U hub can be
plugged directly into the Qu dSNAKE port if you are not using this to connect to an AudioRack. Power can
be provided over the Cat5 by the ME-U or a PoE switch.
Daisy chain other ME-1
dSNAKE
Find out more about the ME Personal Mixing System at www.allen-heath.com
Qu Mixer Reference Guide
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AP9372 iss.9
6. Qu-16, 24, 32 Operational Overview
This section provides an overview of the Qu fader mixer layout and operation to help you get started
quickly. The Qu-16 mixer is shown here. Similar applies to the Qu-24 and Qu-32.
Touch Screen
SuperStrip
TouchChannel
Screen select
Qu-Drive
Fader Flip
Engineer’s monitor
Copy/Paste/reset
Function key (Fn)
Mix assign
SoftKeys
Layer select
Master Strip
Fader Strips
Mix select Mix keys
Channel select Sel key
6.1 Fader Strips
The Qu mixer has a group of fader strips, one per channel. These
provide access to the input and master channel levels and
processing.
The main channel levels, master levels and all sends to the FX
and mixes can be easily viewed and adjusted using the faders.
The faders can also be used to adjust the Graphic EQ while in
Fader Flip mode.
The faders are motorised and instantly move to show the current
settings when the layer or function is changed.
Layers – There are three Layers. These provide access to inputs and masters as identified by the labels
alongside the layer select keys. Indicators next to the keys show which layer is active.
Press the lower key to access the mono channels.
Press the upper key to access the 3 stereo channels, FX returns, FX sends and Mix masters.
Press both keys together to access the user assignable Custom layer.
There is an option in the Setup / Control / Custom Layer screen to enable ‘Custom Layer only’. This lets
you choose which channels the user should have access to.
Qu Mixer Reference Guide
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AP9372 iss.9
Mute key – Press to turn off the channel audio signal. This affects the send to
all mixes including LR, groups, effects and stage monitors. The key lights red when
muted. It flashes when muted by a Mute or DCA Group master.
Sel key (select) – Press to access the Channel Processing. Parameters can
be adjusted using the SuperStrip controls. The touch screen will display the
settings and provide additional controls if either the Processing or Routing screen
is active. The Sel key is also used for:
Assign mix routing – Hold down the ‘Assign’ key and press Sel keys to
assign channels to the mix currently selected in the Master Strip. The Sel
keys light green to show channels assigned to the selected mix.
Assign Pre/Post fade sends – Hold down the ‘Pre Fade’ key and press Sel
keys to toggle channel sends pre or post fader for the mix currently selected
in the Master Strip. The Sel keys light green to show channels set pre-fade.
Copy channel processing – Hold down the Copy key and press a channel
Sel key to copy its processing settings. Then hold down the Paste key and
press one or more Sel keys to instantly paste those settings to other
channels.
Reset channel processing – Hold down the Reset key and press a channel
Sel key to instantly reset all it’s processing to factory default.
Reset Graphic EQ band – Press Sel to reset the associated GEQ frequency
band to 0dB while in GEQ Flip mode.
PAFL key – Press to listen to a channel using headphones and check its level
on the main meters. The meter PAFL indicator lights. Press PAFL again to turn it
off. A SoftKey can be assigned to clear all active PAFL selections. Options are
available in the Setup / Audio / PAFL screen to choose how you want PAFL to
work:
Additive mode – Pressing a PAFL key automatically cancels any previous
selection. Turn Additive on to PAFL more than one channel at a time.
Sel follow PAFL – Link the Sel switch so that pressing PAFL automatically
selects the processing for that channel.
LR to PAFL – Routes the main LR mix to the monitor when there is no PAFL
selected.
Output AFL – This option sets the mix strip PAFL keys to monitor AFL (afterfade listen). With this option turned off these keys monitor PFL (pre-fade
listen). The default is AFL so that you can check mixes after the master fader.
Input AFL – This option sets the input strip PAFL keys to monitor AFL (afterfade listen). With this option turned off these keys monitor PFL (pre-fade
listen). PFL is the usual setting for inputs so that you can check and set their
gain before you bring up the faders.
Channel meter – The strip meters let you keep an eye on signal levels while
you are mixing. These display channel level before the fader and mute control:
Pk – Lights red to warn that the signal is too hot and gain or trim should be
reduced. It turns on 3dB before clipping to warn you before audible
distortion. Pk senses the signal at several points within the channel.
0 – Lights when the signal reaches nominal 0dBu allowing a healthy 18dB
headroom. This is the normal level for mixing.
Sig – Lights to show signal presence. It turns on at -26dBu.
Fader – Controls the level of the input channel, FX or mix master assigned to it.
This can be the main channel fader or a send to an effect or mix depending on
which Mix Select key is active in the Master Strip.
The faders can also control the Graphic EQ frequency bands while in GEQ Flip
mode. The range of frequencies accessed by the faders is highlighted in the touch
screen and labelled at the top of the faders. The centre 0dB flat position is marked
on the fader scale.
Qu Mixer Reference Guide
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AP9372 iss.9
6.2 The Master Strip
Qu provides a dedicated fader strip for the Mix Masters. It presents the fader and controls for the mix
currently selected using the Mix keys alongside. The sends to the selected mix are presented on the
channel faders. They move to show the current settings. This provides a very quick way to access each
mix without the need to switch to the Masters layer.
Mute key – Press to turn off the mix master audio signal. The Mute
key lights red when the audio is muted.
Sel key (select) – Press to access the mix Processing (PEQ,
GEQ, Compressor, Delay) and its Routing parameters using the
SuperStrip and Touch Screen. The screen presents related parameters
while its Processing or Routing key is active.
The Sel key can also be used to:
Copy mix processing – Hold down the Copy key and press the
Sel key to copy the processing settings. Then select a different
Mix, hold down the Paste key and press the Sel key to instantly
paste those settings to that mix.
Reset mix processing – Hold down the Reset key and press the
Sel key to instantly reset all it’s processing to factory default.
Assign all sources – Hold down the Assign key and press the Sel
key to toggle all sources on (assigned) or off to the mix.
Set all sources Pre or Post-Fade – Hold down the Pre Fade key
and press the Sel key to toggle all sources Pre or Post Fade.
PAFL key – Press to listen to a mix using headphones and check its
level on the main meters. The meter PAFL indicator lights. Press PAFL
again to turn it off. A SoftKey can be assigned to Clear All active PAFL
selections. Options are available in the Setup screen to choose how
you want PAFL to work. The default setting is AFL (after-fade listen).
Mix meter – The strip meter lets you keep an eye on the mix master
signal level. This is ‘post-fader’ and displays the level after the fader and
mute control to follow the signal available at the output of the mixer.
Pk – Lights red to warn that the signal is too hot and mix level
should be reduced. It turns on 3dB before clipping to warn you
before audible distortion.
0 – Lights when the signal reaches nominal 0dBu allowing a
healthy 18dB headroom. This is the normal level for mixing.
Sig – Lights to show signal presence. It turns on at -26dBu.
Fader – Controls the level of the mix master currently selected. There
is +10dB boost available. Normal setting is around the ‘0’ position.
Mix Select keys – These select which mix master is presented on
the master strip. Only one can be active at any time. Press a key to
select a mix. The channel faders move to become the sends to the
selected mix. Channels can be assigned using the Sel keys. Press the
key again turn return to the main LR mix.
LR sets the strip to control the main LR mix. This is the normal
selection for mixing the FOH (main PA) sound.
FX sets the strip to control the FX internal effects send master.
The Qu-16 has 2 FX buses. The Qu-24 and Qu-32 have 4 FX
buses.
Mix, Grp sets the strip to control one of the mono or stereo mix or
Group masters. Groups are not available on the Qu-16.
The Mix key can also be used to copy or reset any of the FX and Mix
send levels, pan and assignments. This does not affect the Pre/Post
settings.
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6.3 Working with the sends on faders:

Select a Mix - Press a Mix key. The master strip presents the
mix fader and controls. The channel faders move to present
the sends to that mix.

Adjust Send levels – For Mix and FX sends. Move the
channel faders. These become the sends to the selected mix.

Adjust Send pans - While a stereo Mix is selected, press a
channel Sel key and use the Pan control to pan its send in
the mix.

Assign sends to the mix – Hold the Assign key to view the
current channel assignments (routing) to the mix. The Sel
keys light when the channel is assigned to the mix. To toggle
individual assignments on or off, press channel Sel keys
while holding Assign.

To toggle all assignments on or off - Hold the Assign key
and press the master strip Sel key.

Set sends Pre or Post fader – For Mix and FX sends. Hold
the Pre Fade key to view the current channel pre/post fade
settings for the mix. The Sel keys light when set to Pre-fade.
To toggle individual sends pre or post, press the channel Sel
keys while holding Pre Fade. It is typical to use Pre-fade for
monitor sends and Post-fade for effects sends.

To toggle all sources Pre or Post Fade - Hold the Pre Fade
key and press the master strip Sel key.

Group mixes – Selecting a Grp mix lets you assign channels
and FX returns to the group. The LR mix channel faders and
pan positions remain active. Groups are not available on the
Qu-16. The Mix key lights purple if configured as a Group, or
blue if configured as a Mix.

Press the Mix key again or press LR to return to the main
mix, or press another Mix key to adjust a different mix.
Qu-16
Qu-24 and 32
 Always remember to return to the main LR mix once you have
finished adjusting monitor or effects levels.
Hold and then press Sel
Toggle individual sources
Toggle all sources
Pre/Post
Assign
Sends on faders
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7. Qu-Pac Operational Overview
This section provides an overview of the Qu-Pac faderless mixer layout and operation to help you get
started quickly.
SoftKeys
Touch Screen
Live mixing screens
System screens
ST3 Input
Qu-Drive USB
Phones
Alt Out
Channel screen
Custom Select keys
Fn key
Copy/Paste/Reset keys
Channel select
Virtual fader strip
Mix select
Screen rotary control
Touch Screen - All live mixing, setup and memory management functions can be
controlled from the Qu-Pac front panel. The colour touch screen provides quick
access to these functions. The top presents tabs for the available pages. The bottom
presents a toolbar showing status information.
Screen Rotary - Adjusts the value of parameters on screen. Touch a parameter.
It highlights orange to show it is selected. Turn the Rotary to adjust its value.
Fn key - Press to open an option pop-up page for the currently selected screen. Its
function, if available, is shown in the screen toolbar above the key. For example, the
Fn key provides quick access to the Libraries while in Processing screens.
Live mixing screens - These screens provide quick access to live mixing
functions such as level control and signal processing:
Qu-Control - User assignable custom screen for simple
level, mute and on/off control. A user permission can be set
so that this is the only control available to the ‘Basic User’, for
example bar staff control of zone music source and level at a
venue.
Processing – Follows the active Sel key or button to open
the signal processing screens. This includes the Preamp,
Gate, Ducker, PEQ, GEQ, Compressor, Delay, FX
parameters and more.
Routing – Follows the active Sel key or button to open the
routing assignment screens.
Channel – Follows the active Sel key or button to open a
virtual ‘fader strip’ on screen. This replaces the physical
faders of the other Qu mixer models. It provides a way to
work with the faders when not mixing using an iPad.
The Channel screen presents tabs and Sel buttons to access
any Qu input or output channel, and the DCA and Mute
Group masters.
You can also use this screen to select a different Mix, for
example to adjust monitor or FX send levels.
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System screens - These screens provide access to the mixer setup, Qu-Drive
recording and memories:
Home – Pages of housekeeping functions including safe
Shut Down, Lock Surface, change and set up User Profile,
view Meters and RTA, and work with Qu-Drive stereo and
multitrack recording and playback.
FX – View, load and set up the 4 internal effects units. The
Back Panel view lets you patch each unit as inserted or
send/return. These can provide reverbs, delay and
modulation effects types.
Scenes – Name, store and recall to/from 100 Scene
memories. You can block selected parameters from scene
recall by setting a global as well as per-scene Filters. You
can protect selected channels from recall by making them
Safe.
Setup – Access menus to configure Qu-Pac. Includes PAFL
options, Talkback, Signal Generator, Custom Sel keys,
SoftKeys, Network, MIDI, Output Patching and more. You
can transfer Scene, Library and Show data to a USB storage
device, calibrate the screen, format a USB drive for
recording, and update the mixer firmware.
Press and hold the Setup key and turn the screen Rotary for
the dimmer function to adjust screen and indicator
brightness.
Copy/Paste/Reset keys - These let you copy or reset processing or mix
parameters. To copy – Hold down the Copy key and press the key associated with
the parameters you wish to copy. Then hold down the Paste key and press Sel key
(for processing) or Mix key (for send levels, pan and assign) of the channel or mix to
copy to. To Reset – Hold down the Reset key and press an associated key:
+ Input strip Sel key = HPF, Gate, PEQ, Comp, Delay
+ Mix strip Sel key = PEQ, GEQ, Comp, Delay
+ Mix key = Send levels, Pans, Assign
+ touch Scene item in list = Scene name and contents
 Copy/Reset of Mix does not affect the Pre/Post fader
settings.
Custom Select keys - 16 Sel keys can be user assigned for quick access to
any combination of channels, masters or DCAs. For example, assign only those that
you are using for your show. Space is provided for a label strip. Assign these keys
using the Setup / Control / Custom Sel screen.
SoftKeys - 15 SoftKeys can be user assigned for quick access to various
functions such as mutes, tap tempo, scene recall and navigation, Qu-Drive transport
control, PAFL clear or Talk. Default is keys 1-4 assigned as Mute Groups 1-4, and
key 15 assigned as Talk for talkback to stage. Assign these keys using the Setup /
Control / SoftKeys screen.
ST3 Input - Convenient front panel stereo mini jack input for plugging in a local
playback source such as an iPod, phone or laptop.
Qu-Drive USB socket - For Scene, Library and Show data transfer, and also for
stereo or 18-track multitrack recording direct to a USB storage device.
 Qu-Drive audio recording and multitrack playback require the USB storage
device to support high sustained transfer rates. Not all USB devices will guarantee
flawless performance. To find out more please refer to the ‘Understanding Qu-Drive
and USB’ document in the Qu Knowledgebase on the Allen & Heath web site.
Phones - Level trim and standard ¼” jack socket for plugging in headphones to
listen to the mixer PAFL (monitor) signal.
Alt Out - Level control for the stereo ‘alternative’ local output available on the rear
panel. The source to this output is patched using the Setup / Output Patch /
Surface screen. For example you could access a stereo Matrix output here.
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8. Note on Qu-SB
 Please refer to the Qu-SB Getting Started Guide AP10287 for an operational
overview of the mixer. The guide can be downloaded from the Allen & Heath
website.
 The following chapters reference the Qu-16, Qu-24, Qu-32 and Qu-Pac
Touchscreens. However the functions listed are also available on Qu-SB and can be
controlled via the Qu-Pad iPad app, often with a similar menu structure. Refer to the
embedded Qu-Pad Help for information on using the app.
9. Processing and Mix Functions
9.1 Channel Naming
Qu channels, FX, mixes and groups can be named using the screen keypad by touching the pencil icon.
The following can be named: Mono input channels, Stereo input channels, FX Returns, FX Sends, Mix,
LR, Groups, Matrix, Mute Groups, DCA Groups.
Channel names
The name is displayed at the top left of the
Processing and Routing screens. The name can be
edited from the Processing screen.
The pencil icon appears when the name is blank. All
names are cleared when the Qu mixer is reset or the
‘Reset Mix Settings’ scene is recalled.
Touch the name box to open the screen keypad and
edit the name.
Names can have up to 6 characters.
Touch the Shift button to type in an uppercase
character. Touch the button twice for Caps Lock.
Mute and DCA Group names
Open the Routing screen Fn key Mute/DCA page to
view the Mute and DCA Group masters. Their names
are displayed.
Touch a name box to open the screen keypad and edit
the name.
Names in Qu-Pad, Qu-Control and QuYou apps
Names stored in the Qu mixer are displayed in the QuPad, Qu-Control and Qu-You apps. These can also be
edited within the Qu-Pad app.
Names and Scene memories
Names are stored as part of the Qu mixer Scene
memories.
You can block or allow names in Scene recall using
the Global and per scene Filters. Three filter items
affect names:



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Input/FX Names – CH, ST, Groups and FX Returns
Output Names – FX Sends, Mix, LR, Matrix
Mute/DCA Grp Masters – Mute and DCA names
AP9372 iss.9
9.2 Channel Processing
The SuperStrip provides familiar, analogue feel, one function per knob control of channel and mix master
processing such as equalisers and dynamics. The Touch Screen displays the parameter values and
provides additional related controls while in the Processing screen. This processing is accessed using
the fader strip Sel keys. The Qu-Pac does not have the physical controls.
The following processing is available:
Mono input CH
Stereo input ST1-3
FX Return 1-4
Groups (not Qu-16)
Mix1-10, LR
Matrix (not Qu-16)
= Source, Preamp, HPF, Gate, PEQ, Comp, Delay, Ducker, Stereo Linking
= Source, Preamp, HPF, Gate, PEQ, Comp, Delay, Ducker
= FX parameters, PEQ
= Parametric EQ, Graphic EQ, Comp, Delay, Ducker
= Parametric EQ, Graphic EQ, Comp, Delay
= Parametric EQ, Graphic EQ, Comp, Delay
9.3 Working with the Processing:

Press a fader strip Sel key. The Processing Block
controls become active for that channel.

Press the Processing key to work with the parameters
using the Touch Screen.

Touch the top part of the Touch Screen to open the
tabs for the available processing blocks.

View values in the lower part of the screen. Touch
screen buttons and use the screen rotary to adjust
parameter values.
9.4 Working with Processing Libraries:

Press the ‘Library’ Fn key to open and close the related
Library page.

Use the left hand list for individual processing libraries
or the right hand list for complete input channel
processing libraries including the preamp.

Store - Touch ‘Store New’. Enter a name using the
screen keypad to store a new User Library. You can
store up to 128 Libraries.

Recall - Highlight a library item and touch ‘Recall’ to
instantly recall its settings. Turn on ‘Recall Preamp’ if
you want to recall the preamp settings.

Edit – Highlight a library item and touch ‘Overwrite’ to
overwrite an existing library with the current settings, or
‘Delete’ to delete it from the list. Touch the ‘Name’ box
to edit its name.
User Library – Store your own settings.
Factory Library – Provides a starting
point for mixing.
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Preamp
An analogue preamplifier (‘head amp’) matches each
connected microphone or line signal to the operating
level of the console before it gets converted to digital
to be processed and mixed with the other channels.
Source lets you choose one of four sources as the
input to the channel. Press the Fn key to open the
Source screen.
Local = Mic/Line socket on the Qu rear panel.
dSNAKE = Remote preamp from AudioRacks.
Qu-Drv = Playback from USB hard drive.
USB B = Audio streaming from a Mac computer.
Touch the CH buttons to highlight those you
wish to change. Select the source from the list.
Choose either Qu-Drive or USB.
This is a global control that
affects all channels.
Input Patching – dSNAKE sockets can be
patched to any channel. A socket can be
patched to more than one channel.
Touch the Source page Patch button. This is a
shortcut to the I/O Patch / dSNAKE In page.
Touch a CH or ST button and turn the screen
rotary to select the dSNAKE socket number.
The button code indicates dSNAKE device:
N/C = No AudioRack is connected
Main = First AudioRack
Exp = Second (Expander) AudioRack
The reset default patch is one-to-one mapping of
dSNAKE to channel.
 The default patch for Qu-Pac and Qu-SB is
Local (red Gain)
CH1-16 = Local1-16, and CH17-32 = dSNAKE 116.
dSNAKE (yellow Gain)
Input patching can be changed and is stored in
Scene memories.
Channel Preamp source
Local (red Gain) – Rear panel Mic/Line sockets
feeding the internal Qu mixer preamps. These are a
pad-less design featuring wide gain range.
Qu-Drive (dark blue Gain)
USB B (Light blue Gain)
dSNAKE (yellow Gain) – Remote preamps located in
an AudioRack on stage or other remote location and
connected to the Qu dSNAKE port via a Cat5 cable.
The AudioRack preamps include 20dB Pad switching.
Channel USB source
Qu-Drive source (blue Gain) – Stereo or multitrack
playback from a USB hard drive plugged into the top
panel Qu-Drive port. Provides a +/-24dB Trim control.
USB B source (blue Gain) – Multi-channel streaming
from a Mac computer via the rear panel USB B port.
Provides a +/-24dB Trim control.
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The panel USB Select key in the SuperStrip switches
between the current Preamp source (Local or
dSNAKE) and the current USB source (Qu-Drive or
USB B). This key is not available on Qu-Pac.
Phantom Power
Turn on 48V if the connected device requires phantom
power, for example a condenser microphone or active
DI box. Touch and hold for 1 second to toggle on or
off. This prevents accidental operation.
 To prevent audible thumps make sure the channel
Gain
is muted before plugging or unplugging sources while
phantom power is on.
Peak


Gain
Turn up Gain so that the average loud signal reads
into the yellow of the meter. Turn down if any red peak
light flashes.
Polarity
Touch Ø to reverse the polarity of the input signal, for
example that of the lower mic when working with two
microphones on a snare drum.
Delay
Up to 85ms delay can be added to each input channel.
In most cases delay is not needed, but can be useful
in time aligning sound from the PA to the acoustic
sound from an instrument on stage. Allow 1ms per foot
distance as a starting point.
Touch and use the rotary to set delay time. Delay can
be switched in or out.
Insert
You can choose whether to insert either an FX or a
Ducker into the channel signal path. You cannot insert
both. Touch to highlight the selection knob and turn
the rotary to select FX or Ducker. The inserted device
can be switched in or out.

TRIM POL
FX
Insert
HPF
0
Ducker
Insert

GATE
PEQ
COMP
DELAY
Inserted
FX
TRIM POL
0
FX
Insert


HPF
Ducker
Insert
GATE
PEQ
COMP
DELAY
Inserted FX
Go to the FX / Back panel screen to choose and
assign one of the 4 internal FX as an Insert into a
channel. The FX is inserted after the preamp and
before the HPF.
Use the FX / Front panel screen to recall an FX Library
and work with the parameters. Touch the D/W control
and turn the screen rotary to balance between the
‘Dry’ (direct) and ‘Wet’ (affected) signal.
Inserted Ducker
Inserted
Ducker
Trigger source
The Ducker works by automatically reducing (ducking)
the level of the channel when a trigger source is
detected. For example, an announcement mic could
trigger the ducker on a music channel so that the
music level is reduced when an announcement is
made.
The Ducker is inserted between the HPF and noise
Gate.
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Ducker
Touch Ducker Setup to open the settings page:
Single – Single channel ducking. The trigger and
settings apply to just this channel.
Gang – Multiple channel ducking. The same trigger
and settings apply to all channels set to Gang mode.
 There is only one Gang.
Trigger Input – Touch to highlight and then turn the
screen rotary to scroll through the available trigger
sources.
Channel trigger sources follow the Global Direct
Output setting. This would typically be set to Follow
Fader, Follow Mute. The Direct Out source is set in the
input channel Routing screen.
Threshold – Sets the level of the trigger source above
which the channel will be ducked. The meter shows
the trigger level together with threshold pointer and
ducking activity (gain reduction).
Depth – Sets how much the channel signal will be
ducked. From 0dB (no ducking) to 60dB (full ducking).
Three controls set the speed at which ducking occurs.
Attack – Sets how fast the channel signal is ducked to
the level set by the Depth control. Variable 20ms to
600ms.
Hold – Sets how long the channel signal is held at the
Depth level after the trigger signal is removed. Variable
40ms to 10s.
Release – Sets how fast the channel signal rises back
to its normal level at the end of the Hold period.
Variable 250ms to 5s.
 Ducker settings are not part of the channel libraries
or the Copy/Paste/Reset function.
Stereo Linking
Odd/even pairs of mono input channels can be linked
for stereo operation.
 Even/odd channel pairs cannot be linked.
The default is all parameters including the preamp,
processing and routing linked. Pan becomes a width
control when linked. Panning one channel in a linked
pair to the left automatically pans the other to the right
by the same amount.
Some parameters can be removed from the link using
the buttons:
Preamp – Gain/Pad/48V, Polarity
Dynamics (Compressor and Gate) - Side Chains
Main mix – Fader/Mute, Pan
Touch Apply to accept your changes.
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Gate
The Noise Gate can be switched in to dynamically turn
off the audio when it drops below a certain level. For
example, to reduce resonant decay of a kick drum or
floor tom, or hiss of a noisy keyboard.
Use the In key or screen button to switch the Gate in
or out. This is similar to inserting an outboard rack
mounted device into the Insert socket on an analogue
console channel.
Note – The lower part of the
Gate meter is a darker green
to show signal ‘noise’ level
below -40dB.
Gate active
GR = Gain Reduction
Set Depth for how much signal reduction you want
when the gate closes. 20dB is a typical setting. The
GR indicator lights and red screen meter shows the
amount of reduction when the gate is closed.
Hold sets how long the gate remains open after
dropping below the threshold. Attack sets how fast the
gate opens when the signal rises above the threshold.
Release sets how fast it closes when dropping below
the threshold. Experiment with these controls to
achieve smooth operation without a pumping effect.
HPF (high pass filter)
The HPF is used to reduce unwanted low frequency
sounds such as vocal popping, wind noise and stage
rumble.
Switch the HPF in using the In key or screen button.
Use the panel rotary or screen button and rotary to
sweep the cut-off frequency until you have reduced the
unwanted sound. The filter has an 18dB slope and can
be swept from 20Hz to 2kHz. The violet screen curve
shows the resulting frequency response.
PEQ (parametric equaliser)
The Parametric Equaliser allows tonal adjustment of
the channel sound. It provides independent control of
4 frequency bands, each with three parameters that
can be adjusted:
LF (low frequency)
LM (low mid frequency)
HM (high mid frequency)
HF (high frequency)
Gain – Boost or cut frequencies by up to 15dB. Centre
0dB is flat response (no affect).
Frequency – Each band can sweep its centre point
frequency across the full range from 20Hz to 20kHz.
This means you can overlap bands and have more
precise control over problem frequency areas.
You can turn the PEQ graph fill on or off
using the Setup / Control / Preferences
screen.
Width – Each band has a bell-shaped response. The
width of the bell can be varied from a very wide 1.5
octaves affecting many frequencies to a very narrow
1/9th octave affecting a small range of frequencies.
Setting LF or HF to widest position using the screen
rotary changes its response to shelving.
Experiment with the controls to hear their affect on
different sounds. Switch the PEQ in or out using the In
key or button to compare the sound. For live mixing it
is better to cut rather than boost frequencies where
possible.
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Compressor
The Compressor is a powerful tool for controlling the
dynamics of the sound, for example to smooth out a
bass guitar or to narrow the dynamic range of a vocal
to make it more intelligible in a busy mix. At its extreme
setting the compressor can be used as a limiter to
prevent the signal exceeding a preset maximum level.
A compressor works by dynamically reducing the
amount of gain when the signal increases above a
certain threshold. This pulls back loud moments.
Applying ‘make-up’ gain restores the average volume
and also has the effect of bringing up quiet moments.
The result is a reduced dynamic range.
While listening to the signal adjust Thres (threshold) to
set the point at which compression starts. The GR
indicator and red screen meter will start to show that
compression is active. Set Ratio for how much
compression you want from none (1:1) to full limiting
(Inf). A ratio of 3:1 is a good starting point.
Use the In key or screen button to switch the
compressor in and out and turn up Gain so that the
average volume is similar.
Attack sets how fast the compressor starts to work
when the threshold is reached. Release sets how fast
it stops compressing when the signal drops below the
threshold. For example, adjust these to achieve a
‘punchy’ dynamic sound, or smooth out the response
to reduce an audible ‘pumping’ effect.
Two ‘knee’ settings are available. Hard Knee means
that compression is applied at the set ratio as soon as
the threshold is reached. Soft Knee means that the
compression ratio increases gradually from 1:1 to the
set ratio as it approaches the threshold. The curve
illustrates this.
4 Compressor types are available using the dropdown menu. Two ‘Manual’ types allow user control of
attack and release. Two ‘Auto’ types provide automatic
control of the compressor dynamics.
Experiment with the effect of the compressor settings
on different sounds. Try to use compression only
where it is needed, and avoid compression in stage
monitor speakers.
Mix processing
The mix masters provide PEQ, GEQ, Compressor, FX
Insert capability and output Delay.
Mix and Matrix
The mixes include Groups, Mono and Stereo Mixes,
and Matrix.
To access the Mix processing press the Qu mixer
master fader strip green Sel key or Qu-Pac Channel
screen select mix button.
Delay up to 170ms can be added to each mix output.
This is typically used to time align the PA to the
acoustic sound from the instruments on stage, or to
align fill loudspeakers to the main PA. Allow 1ms per
foot distance as a starting point.
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Group (not available on Qu-16)
Insert switches an internal FX in or out if one has been
patched into the mix. The button is disabled when the
insert is not patched. The FX is inserted at the start of
the processing before the EQ.
Use the FX / Back panel screen to choose and assign
one of the 4 internal FX as an Insert into a mix.
Groups allow FX or Ducker to be inserted. Using the
Ducker on a Group provides a quick way to set up
multiple channel ducking as well as providing master
processing and control for those channels. The ducker
works in the same way as that described for input
channels above.
GEQ (graphic equaliser)
The Graphic EQ is a popular tool for tuning out
resonant frequencies in PA systems, for example when
ringing out monitor speakers.
The GEQ allows tonal adjustment of the overall mix
sound. It splits the 20Hz to 20kHz audio frequency
range into 28 standard 1/3 octave bands from 31.5Hz
to 16kHz allowing +/-12dB cut or boost.
Touch the screen In button to switch the GEQ in or
out. Touch a slider to highlight it and use the screen
rotary to cut or boost its frequency. This affects a
small range of frequencies 1/3 octave wide centred on
the frequency marked below the slider. The position of
the sliders shows the approximate shape of the
resulting frequency response curve.
GEQ Fader Flip (Qu-16, 24 and 32)
Press the surface GEQ Fader Flip key to view and
adjust the GEQ on the faders while a mono, stereo or
the LR mix is selected. The screen highlights the active
range of frequencies. Press the switch again to
change range or return to normal mix mode.
The faders toggle between the lower and higher
ranges of frequencies with a useful overlap. The
frequencies are shown on screen and marked on the
panel above the faders.
The fader strip Sel key turns on when the slider is at
0dB mid (flat) position while in fader flip mode. Press a
Sel key to return a slider to 0dB.
The strip meters display the RTA of the current PAFL
signal. The dominant frequency (peak band) lights the
red meters. Select the mix PAFL key to view its RTA.
It is better to cut rather than boost frequencies when
tuning speakers using the GEQ.
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9.5 Processing Libraries
Processing block settings can be stored as Libraries:
 PEQ
 GEQ
 Gate
 Comp
 Channel (Preamp, Gate, PEQ, Comp, Delay)
You can store up to 128 library items including all types.
Press the Fn key on the related Processing screen to
open the Library page. The Channel library is available
from its Gate, PEQ and Comp screens.
Channel Library – This is available for the mono and
stereo input channels
Turn the ‘Recall Preamp’ option on if you want to recall
the input preamp settings along with the processing.
This includes the settings for all its preamp sources Local, dSNAKE and USB.
Factory Libraries – Built-in libraries are available as
examples or to give you a starting point for live mixing.
These cannot be deleted or edited.
User Libraries – You can name and save your often
used settings for quick recall. User libraries can be
overwritten, renamed and deleted using this screen.
Library lists – The left hand list displays related
processing block libraries, for example the PEQ. The
right hand list displays libraries for complete input
Channel processing.
 There is no ‘standard’ setting for instruments in live
mixing as many factors affect the sound, for example
the instrument itself, its pickup, the mic used, room
acoustics and more. For this reason the Factory
libraries simply provide a starting point or examples.
You can also save your preferred settings as User
libraries.
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9.6 List of Factory Libraries
PEQ
Gate
Comp
GEQ
:Bell
:Shelf
Banjo
Bass:A
Bass:E1
Bass:E2
Drm:KK1
Drm:KK2
Drm:SN1
Drm:SN2
Gtr:A1
Gtr:A2
Gtr:E1
Gtr:E2
Horn
Keys:1
Keys:2
Stomp
String:1
String:2
Vox:1
Vox:2M
Vox:3F
V:Choir
V:Speech
Flat - 4 bell @ 0.5 octave
Flat - Shelving LF and HF
Banjo pickup or mic
Acoustic (upright) bass
Electric bass - Deep
Electric bass – Punch
Kick drum – Rock
Kick drum – Jazz
Snare drum – Standard
Snare drum – Deep
Acoustic guitar – Mellow
Acoustic guitar - Bright
Electric guitar – Mellow
Electric guitar – Bright
Brass instrument – Sax
Keyboard – Full
Keyboard – Tight
Foot stomp box
String instrument – Full
String instrument – Mellow
Vocal mic
Male vocal
Female vocal
Choir mic
Speech mic (talking)
:Slow
:Fast
:Noise
Drum
Slow response
Fast response (percussion)
Subtle reduction of noise
Kick and tom drums
:Gentle
:Heavy
:Limit
Bass:1
Bass:2
Vox:1
Vox:2
Vox:3
Subtle compression 2.2:1
Heavier compression 3.2:1
Protection limiting
Soft bass compression
Punchy bass compression
Soft vocal compression
Vocal compression
Strong vocal compression
Wdg:Vox
Vocal wedge monitor reduce feedback
Channel
:Mic
:Line
:DI 48V
Bass:A
Bass:E
Drm:Hat
Drm:KK
Drm:OH
Drm:SN
Drm:Tom
Gtr:A
Gtr:E
Horn
Keys
String
Vox
V:Choir
V:Speech
Vocal or instrument mic
Line level source
With 48V on for DI box
Acoustic (upright) bass
Electric bass
Hi-hats
Kick (bass) drum
Overhead for cymbals
Snare drum
Tom drum
Acoustic guitar
Electric guitar
Sax, trumpet, trombone
Keyboard, electric piano
Stringed instruments
Vocal mic
Choir mic
Speech mic (talking)
Channel Libraries are intended to provide a
useful starting point for live mixing. Settings are
mostly flat with parameters set to typical values for
the associated source.
These libraries are available for the mono and
stereo input channels. They recall all processing
settings including Gate, PEQ and Compressor.
Turn the ‘Recall Preamp’ option on if you want to
also recall the Preamp settings such as Gain, 48V
and Polarity.
Recall these libraries while setting up the mixer
before sound check. When sound checking each
instrument, start by checking its preamp Gain and
then dial in EQ Gain and Gate/Compressor
Threshold.
PEQ, GEQ, Gate, Comp Libraries recall
just their associated parameters and are
intended to provide examples to
demonstrate how the processing can be
used with different instruments and
sources.
PEQ
Libraries starting with ‘ : ‘ can give you a
general purpose starting point.
PEQ libraries store and recall both the
HPF and PEQ settings.
*55shVOX
*SM58VOX
*B58VOX
*SM57GTR
*B52KICK
*SM57SNR
*e835VOX
*e935VOX
*e609GTR
*e602KIC
*e604SNR
ProFactory Libraries are PEQ Libraries created by
leading microphone manufacturers, and provide
starting points for a number of popular, industry
standard microphones. These Libraries start with ‘*’
More ProFactory Libraries can be downloaded from the
Allen & Heath website.
Qu Mixer Reference Guide
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9.7 Channel Routing
The Touch Screen presents tabs to access a CH or ST channel routing assignments and send levels
when its fader strip Sel key is selected and the Touch Screen Routing screen is active. The SuperStrip
Pan control provides quick access to the related mix pan setting for the channel. The Fn key is used to
access the Mute and DCA Group masters while in any Routing screen.
9.8 Working with the Routing screens

Press a fader strip Sel key.

Press the Touch Screen Routing key.

Touch the tabs at the top of the screen.

Touch screen buttons and use the rotary.

Press the Fn key to access the Mute and DCA Groups.
Pan
Qu-Pac
Qu-16, Qu-24, Qu-32
The rotary Pan control becomes active when an input
channel Sel key is active. Its function depends on
currently selected Master Strip mix:
LR = Channel main pan
FX send = Disabled
Group (not Qu-16) = Channel main pan
Mono Mix1-4 = Disabled
Stereo Mix5-10 = Channel send pan
Pan becomes a Width control when linked for two
input channels – Panning one to the left automatically
pans the other by the same amount to the right.
Channel Routing screens
Tabs available on the CH and ST routing screens:
Main tab – Global Direct Output settings. These affect
all channels.
Mix Sends – Assignments, pre/post, levels and pan to
the mono Mixes 1-4 and stereo Mixes 5-6, 7-8, 9-10.
FX Sends – Assignments, pre/post and levels to the
FX mixes (Qu-16 has 2, the other models have 4).
Grp Sends – Assignments to the stereo Groups if they
are in Group Mode, or assignments, levels and pan if
they are in Mix Mode (not on Qu-16).
Mute/DCA Group Assign – Assignments to the Mute
and DCA groups.
Qu Mixer Reference Guide
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AP9372 iss.9
Channel Direct Output settings
Adjust the channel Direct Output Trim from off to
+10dB gain. The default setting is 0dB.
Choose the channel source for the Direct Outputs
using the drop-down menu. Choose whether the
outputs are affected by the faders and/or mutes. These
are global settings affecting all channels.
Qu Direct Outputs can be used for several different
applications. Typical settings are shown below:
Single channel FX send – Patch the channel to the
input of one of the 4 FX devices, for example to create
a delay effect send for a single vocal.
FX = Post Delay, Follow fader On, Follow mute On
Ducker trigger input - Gets its source from the
selected trigger channel Direct Output.
Duck = Post Delay, Follow fader On, Follow mute On
Monitor sends - The ME-1 personal monitor mixer
gets assigned channel sources from their Direct
Outputs.
Monitor = Post PEQ, Follow fader Off, Follow mute On
USB audio sends - These can be sourced from the
channel Inserts (default) or from the Direct Outputs.
Live recording = Insert Sends
Qu Direct Output reset default is:
Post Delay, Follow fader On, Follow mute On
Channel Mix Sends screen
Use this screen to work with the sends and
assignments from one channel to all the mixes.
Each send can be set Pre or Post fader. It is typical to
set monitor sends pre-fade so that the channel fader
does not affect the monitor mixes, and to set effects
and fill speaker sends post-fade so that their levels do
follow the faders.
The channel can be assigned (routed) On or Off to
each mix. Touch the Level and Pan buttons and use
the screen rotary to adjust their settings.
To work with the sends and assignments from all
channels to one mix use the Qu-16, 24, 32 Master Strip
Mix keys and the fader strips, or the Qu-Pac Channel
screen and its Mix Select buttons..
Channel FX Sends screen
Use this screen to work with the sends and
assignments from one channel to the FX mixes. These
are for Mix>Return effects such as reverb and delay.
The sends can be set Pre or Post fader but it is usual
to leave these set post-fade so that the effects follow
the channel fader level. Each send can be assigned
On or Off. Its Level can be adjusted here.
Qu-16 FX3 and FX4 do not have dedicated sends.
However, you can assign any of the Mix1-10 buses to
feed these. To do this use the FX / Back panel screen.
Qu Mixer Reference Guide
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AP9372 iss.9
Channel Grp Sends screen
The Qu-24 includes two stereo Group mixes, and the
Qu-32, Qu-SB and Qu-Pac have four. Groups are not
available on the Qu-16.
Firmware V1.8 introduced Group Mix Mode. You can
choose each Group to be either an audio group or a
stereo mix.
Group mode is set for each Group using its master
Routing screen.
The channel Grp Sends screen lets you work with the
sends from one channel to all the groups. To work with
the sends from all channels to one group, use its
Master Strip Mix key and the fader strips.
The Grp Sends screen presents the controls available
according to currently selected mode:
Group - Stereo Audio Group with assignments. A
Group can be used as a separate output or as a subgroup to LR and the Mixes.
Mix - Stereo Mix with send level, dedicated pan,
assignments and pre/post selection. Can be used to
expand the number of mixes available, for example to
add more monitor sends.
Channel Mute/DCA Group screen
All Qu models provide 4 Mute Groups and 4 DCA
groups for mute and level control.
This channel screen lets you assign one channel to
any combination of the Mute and DCA groups. To
work with the assignments of all channels to one
group, press the Fn key to open the Mute/DCA master
screens.
Qu Mixer Reference Guide
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AP9372 iss.9
9.9 Mix Routing
The Touch Screen presents tabs to access the Mix master routing assignments and send levels when its
fader strip Sel key is selected and the Touch Screen Routing screen is active. The Fn key is used to
access the Mute and DCA Group masters while in any Routing screen.
Assign all channels on or off to a mix, or
set all sources pre or post-fader.
Select a mix master Sel key while the Routing screen
is active to:
Adjust the Output Balance between Left and Right
sockets of a stereo mix or LR.
Choose the global Channel Source for the selected
mix. This is the point in the channel signal path that
feeds the mix. This affects all sends to the mix.
Post-Preamp
Gain/Trim
Insert
Pre-EQ
HPF
GATE
Post-EQ
PEQ
COMP
Post-All

Choose Post-Preamp if you want the sources to
the mix not affected by any channel processing.

Choose Pre-EQ for a monitor mix if you do not
want the channel EQ to affect the monitor.

Choose Post-EQ if you want the EQ but not the
compressor to affect the monitor.

Choose Post-All processing for FX sends.
DELAY
0
Mix to Matrix Sends
The Qu-24, Qu-32, Qu-SB and Qu-Pac include two
stereo Matrix mixes. These are not available on Qu-16.
The Groups, Mixes and LR can be sent to the Matrix.
The sends to the matrix can be set Pre or Post the
send master fader. Each send can be assigned On or
Off. Its Level and Pan to the matrix can be adjusted
here.
Matrix All Sends View
To work with the sends and assignments from all
mixes to one matrix use the Matrix master
Routing screen Fn key Matrix View.
Touch a mix source box. Use the right of the
screen to adjust its parameters. Touch the
buttons and value boxes and use the screen
Rotary.
9.10
Working with the Matrix (Qu-24, Qu-32, Qu-SB, Qu-Pac)
Each Matrix provides:









Stereo mixing
Source send Levels, Pan and Assign
Master Fader and Mute
Output Balance
PEQ
GEQ
Compressor
Delay
FX Insert
Qu Mixer Reference Guide
A Matrix is a ‘mixer within the mixer’. Channel inputs
route to the Groups, Mixes and LR. These mixes can
then be routed to the Matrix to provide additional
outputs, for example:


Stereo recording, video or broadcast
Delay fill speakers
Access the Matrix masters using the Qu mixer top
fader Layer, the Qu-Pac Channel screen, or assign
them to the Custom Layer.
You can patch the Matrix to Alt Out, AES Out and USB
audio.
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AP9372 iss.9
9.11
Audio Groups
The Qu-24 provides two stereo audio groups in addition to the 10 mixes. Qu-32, Qu-SB and Qu-Pac
provide 4 stereo groups. Groups are not available on the Qu-16.
Firmware V1.8 introduced Group Mix Mode. Groups can be configured as conventional stereo audio
sub-groups or as additional stereo mixes. By using groups in Mix mode the Qu-24 can provide up to 4
mono and 5 stereo mixes. The Qu-32, Qu-SB and Qu-Pac can provide up to 4 mono and 7 stereo mixes.
Select a group master Sel key while the Routing
screen is active.
Adjust the Output Balance between Left and Right
Group sockets.
Choose the Group Mode for Group or Mix operation.
The reset default is Group mode.
 Current settings will be reset when changing
mode. Confirm ‘Yes’ in the popup that appears.
Group Mode - Touch the Group mode button to
set operating mode as a stereo Audio Group. This
provides routing that follows the channel pan control.
You can assign combinations of channels and FX
returns to a group. Groups can be routed to LR or any
Mix to create sub-groups. Groups can be mixed to the
Matrix (not available on Qu-16).
Selecting Group mode resets all assignments off.
Group Settings lets you quickly assign all channels
on or off to the group as a starting point.
The Grp Processing screen identifies mode below the
name box.
The Master strip Grp Mix select buttons illuminate
purple when active in Group mode. Select a Grp mix
and assign sources to the group as shown below.
Mix Mode - Touch the Mix mode button to set
operating mode as a stereo Mix. This provides channel
send levels, dedicated pan, assignments, pre/post and
source selection to the mix. You can assign
combinations of channels, FX returns and groups to a
mix. Mixes can be mixed to the Matrix.
Group Settings lets you quickly assign all channels
on or off, and pre or post fader to the mix as a starting
point. Use the Channel Source drop-down menu to
choose the point in the signal path to send to the mix.
The Grp Processing screen identifies mode below the
name box.
How to Assign Mixes
Hold and then press Sel
The Master strip Grp Mix select buttons illuminate blue
when active in Mix mode. Select a Grp mix and assign
sources and pre/post fader as shown below.
Toggle individual sources
Toggle all sources
Pre/Post
Assign
Sel illuminated = Assign On or Pre-Fade
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9.12
Working with the Groups (Qu-24, Qu-32, Qu-SB, Qu-Pac)
Choose whether you want the Group to operate as an
audio group or a stereo mix. Go to the Grp master
Routing screen.
Changing mode resets the associated parameters.
Audio Group (default)
Group mode provides:










Stereo routing
Source Assign to Group
Master Fader and Mute
Output Balance
Routing to LR, Mix and Matrix
PEQ
GEQ
Compressor
Delay
FX or Ducking insert
CH (mono) and ST (stereo) input channels and FX
returns can be routed to groups. Group routing follows
the channel faders and pan. They do not have send
levels.
You can use a Group to combine several channels for
single fader level control to a separate stereo output,
or sub mix to LR, Mixes and Matrix, or to apply
processing to several channels, for example:






Stereo drum sub mix
Compressor over several backing singers
Single EQ over several lavalier microphones
Grouping signals for recording or ME monitoring
Grouping channels for ducking
Grouping channels for AMM master level control
For sub mixing – Assign channels to the Group instead
of LR, then assign the Group to LR.
Access the Group masters using the Master Strip Grp
Mix keys. The keys illuminate purple when in Group
mode.
Stereo Mix
Mix mode provides:












Stereo send Levels and Pan
Source Assign to Mix
Source Pre/Post fader select
Channel source signal point
Master Fader and Mute
Output Balance
Routing to Matrix
PEQ
GEQ
Compressor
Delay
FX insert
Qu Mixer Reference Guide
Groups can become stereo mixes with send levels and
dedicated pan. They behave the same as Mix5-6, 7-8
and 9-10. Mixes can route to the Matrix. Mixes cannot
be routed to LR or other mixes.
You can use this to expand the number of stereo
mixes available, for example when you need more
monitor mixes or are working with more than 3 stereo
in-ear systems.
Access these Mix masters using the Master Strip Grp
Mix keys. The keys illuminate blue when in Mix mode.
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AP9372 iss.9
9.13
Mute and DCA Groups
The Qu mixer provides 4 Mute Groups and 4 DCA Groups. These let you control the levels of groups of
channels or mixes.
Mute Group – Provides a single master Mute key to mute or unmute all channels
assigned to the group. This is similar to pressing the Mute keys of all assigned channels at the
same time. All channel pre-fade and post-fade sends are affected. This means that sends to
FOH (LR mix), effects and monitors will all be turned off when the assigned Mute Group is
muted using its master key.
Examples - Mute Groups provide a quick way to mute multiple channels during band
changeovers, groups of instruments when they are not being played, or to turn off effects such
as reverb when the performer is talking between songs.
DCA Groups – A DCA (Digitally Controlled Attenuator) provides remote control of the
levels of the channels assigned to it. Unlike a stereo Group, audio does not pass through a
DCA Group. Instead, the audio levels are controlled at the channels by information sent from
the DCA master.
The DCA master Fader adjusts the level of assigned channels at their channel fader point and
before the Pan control. This means that post-fade levels to the LR mix and effects are
adjusted. Pre-fade monitor sends are not affected. The fader adjusts from fully off to +10dB
boost. A channel can have a maximum +10dB boost including its own fader and control from
any assigned DCA group faders. When a DCA fader is at its ‘0’ position it has no effect on the
channel levels. This is the typical starting point when working with DCA Groups.
The DCA master Mute key behaves the same as a Mute Group master. It affects all pre-fade
and post-fade channel sends including LR, effects and monitors. DCA Mute keys can be used
as additional Mute Groups simply by setting their master faders to ‘0’.
Examples – DCA Groups provide convenient single fader level control of multiple channels
such as drums, backing vocals, stage and radio mics.
The following sources can be assigned to Mute Groups:





Mono and stereo Input Channels
FX Send masters
FX Return channels
Mixes 1-10 and LR
Stereo Groups (not Qu-16)
Matrix masters cannot be assigned to Mute Groups.
Assigning one source to many Groups
Press the source fader strip Sel key and select the
Touch Screen Routing screen.
Open the Mute/DCA Group Assign tab. Use this
screen to assign the channel to any combination of the
Mute and DCA Groups.
A green tick next to a Mute Group button indicates that
its master is available on a SoftKey.
Assigning many sources to one Group
While in any Routing screen press the Fn key to open
the Mute/DCA view.
This opens in the Masters tab. The master Mutes and
DCA levels are accessed in this tab. There are two
tabs to access the group assignments.
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To assign Mute Groups - Select the Mute Group
Assign tab, then touch the tab for the Mute Group you
wish to assign.
To assign DCA Groups - Select the DCA Group
Assign tab, then touch the tab for the DCA Group you
wish to assign.
All sources to that group are shown. The larger Qu
mixers present two pages of assignments. Touch the
arrow button to navigate between the two pages.
Touch buttons to assign sources in or out of the
group.
Touch the All button to turn all the assignments in or
out. This affects assignments on both pages.
A yellow dot o in the tab indicates that one or more
sources are assigned within the tab.
Press the Fn key again to close the Mute/DCA view.
9.14
Using Mute Groups
There are 4 ways to access the Mute Groups:
1. For Qu-16, 24, 32, touch the master buttons on the
Home screen.
For Qu-Pac, use the Channel / DCA, Mute screen
2. While in any Routing screen, press the Fn key to
open the Mute/DCA view. Touch the Mute master
buttons in the Masters tab.
3. Assign and use one or more SoftKeys as Mute
Group masters. Any Mute Group can be assigned to
any SoftKey.
4. Use the Qu-Pad iPad app Mute Group strips.
Fn key
The Mute key will flash red if the channel is muted by a
Mute or DCA Group.
A short flash shows it is muted by the group only. A
long flash shows it is muted by its Mute key and a
Mute or DCA group.
Qu Mixer Reference Guide
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9.15
Using DCA Groups
There are 6 ways to access the DCA Groups:
1. All Qu mixers provide DCA master controls in the
Routing screen Mute/DCA view Masters tab. Press
the Fn key to open this view.
Touch a Mute button to mute or unmute a DCA group.
Touch a DCA Level box and use the screen rotary to
adjust its level. Its value is shown in the box.
Fn key
2. The Qu-32 provides dedicated DCA fader control
strips on its Master layer. These provide direct access
to the 4 DCA groups.
3. The Qu-Pac provides access in the Channel /
DCA, Mute screen.
4. You can assign any combination of DCA Masters to
fader strips in the Custom Layer. Do this using the
Setup / Control / Custom Layer screen.
5. Assign and use one or more SoftKeys as DCA
Group Mute keys. Any DCA Group mute can be
assigned to any Soft Key.
6. Use the Qu-Pad iPad app DCA Group strips.
The Mute key will flash red if the channel is muted by a
Mute or DCA Group.
A short flash shows it is muted by the group only. A
long flash shows it is muted by its Mute key and a
Mute or DCA group.
Start with the DCA Master level set to 0dB. At this
setting it has no effect on the channel levels. Raise or
lower the master level to adjust the post-fade levels of
all sources assigned to the DCA Group.
DCA Groups can be used as additional Mute Groups
when their masters are set to 0dB.
 If there is no signal when you raise a channel fader
check that it has not been turned down by any DCA
master it is assigned to.
Qu Mixer Reference Guide
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10.Touch Screen Mixing Functions
All Qu mixers with the exception of Qu-SB feature an 800x480 pixel, colour touch screen for quick and
intuitive setup and control of the mix. The Qu-16, Qu-24 and Qu-Pac have 5” screens. The Qu-32 has a
larger 7” screen.
Sel screens
TouchChannel
Touch to select
each processing
block
Option menu
Button
Parameter box
Other screens
Status toolbar
Function key
Screen Rotary
Edit keys
Screen select keys
Button – Touch to select its function or change its state. Some
functions need be touched for at least 1 second to avoid accidental
operation, for example switching 48V phantom power or resetting the
mixer. These are marked ‘(Hold)’.
Parameter box – Touch to change its value. The box highlights
orange to show it is selected and can be adjusted using the screen
rotary.
Option Menu – Touch to open a list of options available. Scroll using
the screen rotary and touch an item in the list to select it. Several menu
lists are available within the screens, for example, to choose a
compressor type.
Screen Rotary – Use this to change the value of the parameter in
the box highlighted orange on the screen, or to scroll through lists.
Apply / Cancel – Some setup screens present several parameters
associated with one function, for example channel linking. These can
be chosen before they are applied. Touch Apply to accept the changes
or Cancel to close the screen without accepting the changes.
Function Key – The Fn key provides access to
further options associated with the currently selected
screen, for example channel source selection and
processing libraries. It is also used to access the Mute
Group and Matrix mix settings. If available, its function
will appear in the lower toolbar above the key. Press
the key again to close the option screen.
This example shows access to the Mute Groups
screens from within a Routing screen.
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Status Bar – This lower screen toolbar shows useful system information and is always visible.
Fn key function - for example to show that the key is available to select
a Library or Options page.
Scene information – Shows the number and name of the current
(Curr:) and next (Next:) scenes.
Curr: Shows the last scene recalled. This is blank when the mixer
powers up and only appears after a scene has been recalled.
Next: Shows the scene highlighted in the Scenes list ready to be
recalled. This information is useful when using the SoftKeys for scene
recall during a theatre show.
System messages – The scene information can be overwritten by
system messages, for example when using the Copy/Paste/Reset keys.
dSNAKE device status – The yellow dS icon appears when an
AudioRack device such as the AB168, AR2412 or AR84 is connected to
the dSNAKE port and is identified as powered up and operational.
 ME-1 personal monitor mixers can be used with the Qu mixer but
are not recognised by the mixer. The dS icon will only appear when
AudioRacks are connected.
USB status – A USB symbol appears when a compatible USB key or
drive is plugged into the Qu-Drive port and is recognised by the mixer.
The symbol flashes while the drive is being read. If the symbol does not
appear then the USB device may need formatting using the Qu Format
utility.
USB format error – This indicates that the USB device is not formatted
or compatible with the Qu mixer. Use the Setup / Utility / Qu-Drive
screen to format the device. Always format a USB device on the mixer
before using it for Qu data transfer and recording.
 Formatting the USB device will delete any existing data on it.
USB buffer error - A warning message displays if buffer overrun errors
are detected during recording to a USB device.
Qu-Drive transport status – The USB symbol is replaced with one or
more icons to show the transport status of the Qu-Drive Stereo or
Multitrack playback and recording. This shows Play, Record and Pause
status.
Talkback – A green symbol appears when the Talk switch is active.
This is helpful when the Talk switch Momentary Latch option has been
turned off (latched operation).
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10.1
Copy, Paste, Reset keys
You can copy, paste and reset blocks of processing,
mix parameters or scenes and their filters.
Copy – While holding down the Copy key, press or
touch the item you wish to copy. Next, while holding
down the Paste key, press or touch the destination Sel
or Mix you wish to copy to.
Reset – While holding down the Reset key, press or
touch the item you wish to reset to factory default.
The following Copy/Reset is supported:
Reset parameters
Paste parameters
Copy parameters
To copy Qu-Pac processing
Touch screen select button, or press Sel key
+ Input Sel = HPF, Gate, PEQ, Comp, Delay
+ Mix Sel = PEQ, GEQ, Comp, Delay
+ Mix key = Send levels, Pans, Assign
+ Preamp USB source / screen = Preamp only
+ HPF In / screen = HPF only
+ PEQ In / screen = PEQ only
+ GEQ In / screen = GEQ only
+ Gate In / screen = Gate only
+ Comp In / screen = Compressor only
+ touch Scene in list = Scene contents
To copy all processing for a channel or mix use its
Sel key, and then paste it to other channels using their
Sel keys.
 Copy/Reset of all channel processing does not
affect the Name, Source, Preamp, Linking or Ducker
settings.
Individual Processing Block
Touch top section, In button or press In key
To copy just one processing block such as PEQ use
it’s In key or top part of the screen, and then paste it to
other channels using their Sel keys.
To copy levels and routing for a mix use its Mix key,
and then paste it to other mixes using their Mix keys.
 Mix Copy/Reset does not affect the Pre/Post fader
settings.
To copy a scene press Copy and touch a scene in the
list, and then press Paste and touch a scene position
to copy it to.
 The scene Name and its Filter are copied along
with its contents.
To copy Qu-Pac mix levels and routing
Touch Qu-Pac Mix button, or press Mix key
To copy a scene filter press Copy and touch a filter to
copy, and then press Paste and touch the filters of the
scenes to copy to.
 You cannot copy filters to blank scenes.
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10.2
The Sel screens – Processing and Routing
Processing Screen – When selected this
screen presents the processing including Preamp,
Gate, EQ, Compressor for the channel or master
currently selected using its strip Sel key.
Touch the top part of the screen to select the
processing block you wish to view or adjust, for
example Preamp or PEQ. This section is known as the
TouchChannel.
The lower part of the screen changes to provide
access to the related parameters and additional
related controls. Touch a parameter box and turn the
screen rotary to change its value.
The physical controls in the SuperStrip and the touch
controls in this screen provide quick access to live
mixing functions.
Routing Screen – When selected this screen lets
you access the assignment and routing for the channel
or master currently selected using its strip Sel key.
This lets you work with routing to all mixes from one
channel. To work with all channels to one mix use the
Master Strip Mix keys and sends on faders.
The Fn key provides access to the Mute Group
masters and assignments.
10.3
Home Screen
Press the Home key. Pressing it again restores the last
selected Sel screen. The Home tab presents:

Current Firmware version

Current User

The 4 Mute Group master buttons (not Qu-Pac)

Shut Down button to safely shut down the mixer
before turning power off.

Lock Surface to protect settings when the mixer
is left unattended. The password is required to
lock or unlock the surface if one is set for the user.
The Qu-Pac Home screen does not include the Mute
Group master buttons. These are available within a tab
in its Channel screen.
Qu Mixer Reference Guide
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10.4
Home Screen – User
Three User Profiles are available to protect selected functions and restrict user access, for example for
volunteer operators in houses of worship, or guest engineers visiting venues. The Admin user has access
to all functions and can set permissions and allocate passwords if required for the other users.
You can log in as one of 3 Users with different
permissions:
These buttons let the Admin user set a login password
for Qu-You and Qu-Control users.

Admin – Full access to all functions. This is the
factory default and normal setting when User
Profiles are not needed. Admin can set the
passwords and permissions for the other users.

Standard – Operation only. The user is locked out
of setup. Admin configures the channel/mix
access, layout, patching and scene range to be
allowed for the day-to-day or guest operator.

Basic – Faders and mutes only. This is for very
simple level control. Admin can set access to
none or a range of scenes for recall only.
The Qu-Pad app can use either the Admin, Standard
or Basic User, and follows the same user permissions
as the mixer.
Touch the Password
box to enter a
Password.
Touch a User
button to select a
User Profile to edit
or log in.
You can assign a User
Scene to recall
automatically when the
User logs in. This
recalls when the User is
changed, not when the
same user logs back in
after power up.
The Admin user
can press the Fn
key to open the
Permissions
page.
Touch to log in as a different user. Enter the
password if one is set.
Access to mixes
The Basic User is
given access to fader
and mute control of the
LR mix only. They can
recall scenes if a Scene
Range has been set.
Allow or block
access to the Mix
key Pre/Post and
routing assignment.
Block access to the
Sel key Routing
screens.
The Standard User
does not have access
to any Setup functions
including AMM setup,
and can be blocked
from certain mixes and
routing control. They
have full access to
scenes within the
specified range.
Choose which mixes
can be accessed
using the Mix Select
keys.
Allow or prevent the
user being able to
record the mix using
Qu-Drive.
You can restrict
Standard or Basic user
access to a limited
Scene Range.
Custom Layer Only can be set to lock the user out of the
standard Inputs and Masters fader layers. Admin can assign
just the required channel strips and therefore prevent the user
accessing channels that should not be touched.
This is a powerful tool in customising the Qu mixer to suit the
intended user and application.
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10.5
Home Screen – Meters
This screen provides a convenient view of all channel,
mix and FX signal activity.
For optimum performance the loudest signals should
read into the yellow. If any red Peak meter flashes then
reduce the level of that signal to avoid possible
distortion. Increase levels if the meter readings are
consistently low.
The Qu-24 meters screen is shown here. Qu-32
provides two pages of meters. The Qu-16 does not
include Group and Matrix meters.
10.6
Home Screen – RTA
This screen displays a Real Time Analyser (RTA) which
analyses the frequency content of the audio signal.
RTA Mode
The RTA follows the PAFL signal. Select any channel,
mix or FX PAFL to analyse its signal. If the LR to PAFL
option is on in the Setup / Audio / PAFL screen then
the RTA will show the LR mix when no PAFL is
selected.
The RTA splits the frequency into 31 third octave
bands from low 20Hz to high 20kHz, the same
frequencies as used on a graphic equaliser. The
dominant ‘Peak Band’ frequency displays in red.
The RTA is a useful tool to help you identify problem
frequencies such as room resonance and feedback.
The iPad Qu-Pad app can also show a display of the
RTA peak band (most dominant frequency).
Spectrogram Mode
Press the Fn key to access the Spectrogram or to
return to the RTA.
The Spectrogram presents a visual representation of
the spectrum of frequencies in the signal as they vary
with time. The amount of energy is displayed using
colour from dark blue low level to red peak level. The
screen presents an 8 second window to give you a
history of the changes over time.
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10.7
Home Screen – Qu-Drive (USB audio)
 Qu-Drive audio recording and
multitrack playback require the USB
storage device to support high sustained
transfer rates. Not all USB devices will
guarantee flawless performance. To find
out more please refer to the
‘Understanding Qu-Drive and USB’
document in the Qu Knowledgebase on
the Allen & Heath web site.
This opens screens associated with the USB stereo
and multitrack recording:
 Use the USB storage device with the Qu mixer
only. Do not use it for other applications.
* Format the hard drive on the Qu mixer before
starting to record. Use the Setup / Utility / Qu-Drive
screen. This clears the drive and sets up the Qu
directory structure.
Qu-Drive Stereo page – This screen presents
the controls for stereo recording to and playback from
a USB device plugged into the top panel Qu-Drive
port.
The blue Stop buttons light if the USB device is
recognised by the mixer. The controls are disabled if a
USB device is not plugged in or recognised.
Stereo Record – You can record to a USB
storage device plugged into Qu-Drive:

Format = 48kHz, 24-bit, WAV file

Data rate = 288 KB/sec, maximum 4 hours (4GB)

Qu allocates a file name ‘QU-STnnn.WAV’ where
‘nnn’ increments from 001 to 999 starting at the
highest number +1 it finds on the USB device.
Patch the source to be recorded using the Setup /
Output Patch / USB Audio screen. Touch the track 17
box and turn the rotary to select the left source. Press
the ‘+1’ Fn key to increment the right source to track
18, or use the rotary to select an unrelated source.
Mono or stereo Channels and Groups can be globally
sourced from their Insert Sends (pre-processing) or
from Direct Out using this button.
 Qu-Drive Stereo recording shares the same patch
as Track 17-18 of the Qu-Drive multitrack recording
and USB streaming.
The record meter on the USB page displays the
current source. The default is LR post-fade.
Arm the recording by touching the red circle Record
button. Touch the Play button to start the recording.
Recording Errors - A warning message displays if
buffer overrun errors are detected during recording.
Try reformatting or using a different USB drive.
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Stereo Playback – You can play back audio files
from a USB storage device plugged into Qu-Drive:

Format = 44.1 or 48kHz, 16 or 24-bit, WAV file
 Use the USB device with the Qu mixer only. Do not
use it for other applications.
Format the USB device on the Qu mixer before
loading the playback files. Use the Setup / Utility /
Qu-Drive screen. This clears the drive and sets up the
Qu directory structure.
Copy audio WAV files on to USB from your
computer. Place these in the AHQU / USBPLAY
directory. Plug the USB device into Qu-Drive.
Patch the playback to the ST3 channel using the
Processing / Preamp screen Fn key to open the
Preamp Source screen. Make sure Qu-Drive is
selected as the ‘Global USB Source’. Select USB as
the source for ST3.
Once you have selected Qu-Drive as the global USB
source you can also use the panel USB key in the
Preamp section to toggle between the ST3 preamp
and USB source.
Select the track to play back by touching the name
box. You can choose a track from the Playback or the
Recordings directory. Touch Select to confirm.
Press the Fn key for options to choose playback
mode:
Qu-Drive Multitrack page – This screen
presents the controls for multitrack recording to, and
playback from a USB storage device plugged into the
top panel Qu-Drive port.
The blue Stop button lights if the USB device is
recognised by the mixer. The controls are disabled if a
device is not plugged in or recognised.
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Multitrack Record – You can record to a USB
storage device plugged into Qu-Drive:
 We recommend you transfer previous
recordings to your computer and then
reformat the USB device on the Qu mixer
before using it for each show. This will
avoid potential audio skipping that may
occur with some USB devices containing
long recordings.

18 Tracks = Individually patchable sources

Record format = 48kHz, 24-bit, WAV file

Data rate = 144 KB/sec per track (max 4GB total)

Qu allocates a folder name ‘QU-MTnnn’ for each
recording where ‘nnn’ increments from 001 to 999
starting at the highest number +1 it finds on the
device. The tracks are named ‘TRKnn’ within the
folder where ‘nn’ is 01 to 18.
 Use the USB storage device with the Qu mixer
only. Do not use it for other applications.
Format the USB device on the Qu mixer before
starting to record. Use the Setup / Utility / Qu-Drive
screen. This clears the USB and sets up the Qu
directory structure.
Patch the sources to be recorded using the Setup /
Output Patch / USB Audio screen.
Touch a track box and turn the rotary to select the
source. Press the ‘+1’ Fn key to increment the
assignments. Choose the global source for CH and ST
channels and the Audio Groups (Insert sends (default)
or Direct Outputs).
Arm the recording by touching the red circle Record
button. Touch the Play button to start the recording.
Multitrack Playback – You can play back your
multitrack recordings from the USB device plugged
into the Qu-Drive port:
Patch the playback to the input channels using the
Processing / Preamp screen Fn key to open the
Preamp Source screen. Make sure Qu-Drive is
selected as the ‘Global USB Source’. Select USB as
the source for the channels you wish to play back.
Select the recording to play back by touching the
name box. You can choose a folder from the list.
Touch Select to confirm.
Press the Fn key for options
to choose playback mode:
 Qu always expects 18
tracks to be present in the multitrack folder. -You can
create dummy tracks by duplicating and renaming
existing track files.
 Choose to play back either Qu-Drive stereo or
multitrack. It is not possible to play back both stereo
and multitrack at the same time.
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10.8
The FX
Qu features 4 internal stereo FX (effects) processors. Each can be loaded from a library of different effects
types and presets. These are the same as found in the flagship Allen & Heath iLive digital mix system and
are based on emulations of popular industry standard effects.
The FX screen
Press the FX key next to the Touch Screen to open the
FX screen. You work with the FX in the same way you
would with a traditional outboard rack. Start with an
empty rack as shown here. Each of the 4 FX has a
rack slot. Touch the tabs at the top to select each slot.
Library – Press the Fn key to open the Library page.
Select Factory or User library and scroll through and
select the FX type you wish to load into the rack. The
effects are arranged in types on the left with available
presets for each in the right hand window. Touch
Recall to load the FX.
Listen to and experiment with the different presets and
their parameters available.
FX types
Front Panel view
Reverb – This is the most popular effect in live sound
mixing. The SMR Live (Spatial Modelling Reverberator)
features 4 fully configurable spatial models - Classic,
Hall, Room and EMT plate. Each of these use different
reflection and decay algorithms to add natural
sounding space to the dry signal whether subtle small
room echo, vintage vocal plate or a massive arena.
Reverb can make a vocal sound spacious and smooth
in the mix or add body to an instrument such as
acoustic guitar or flute. There are plenty of factory
presets available. The 4 buttons at the top control the
main parameters if you wish to make adjustments. HF
and LF cut shape the response, and Expert opens up
a host of parameters for fine control if you wish to
experiment further. You also have the 4-band PEQ
available in the FX Return channel processing.
Delay – Generates separate left and right tap delay
outputs from the input. Delay time can be dialled in
using the screen rotary, tapped on screen or tapped
using a SoftKey. The left and right delay taps can be
linked to produce a mono effect. Feedback adds
regeneration for a repeating echo effect. Set a short
delay time around 80 to 160ms for the classic
slapback effect.
ADT - An Automatic Double Tracking module capable
of creating short echo/chorusing, classic double
tracking and ‘slapback’ tape delay loops. It includes a
stereo width enhancer and auto panning within the
stereo field. The ADT is perfect for creating classic
doubling effects, thickening programme on stage or
developing a stereo sound field as an alternative to
chorusing.
Chorus - Chorus derives from the late 80’s where
different stereo field creation techniques influenced the
sound of each chorusing unit. Chorus recreates the
classics using 3 stereo-field emulations. These
emulations can be switched in any combination
creating many different stereo fields.
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Symphonic Chorus - A faithful emulation of the 80’s
classic chorus effect. Simple to use and frequently
requested. The unit has just two controls, Frequency
and Depth controlling the rate and delay range of the
stereo modulator. The unit produces a rich, lively and
wide chorus sound with a suggestion of very mild
phasing / flanging. Live engineers commonly use this
for thickening vocals and strings and creating a spatial
sound from a mono source. This has led to two factory
presets ‘SymphonicVox’ and ‘SymphonyStrings’.
Flanger – Qu provides three classic flanger effect
emulations – ‘Ambient’, ‘Vintage’ and ‘Wild’. During
research of classic pedal flangers we found numerous
LFO modulators and stereo splitting techniques. We
implemented them all. For classic deep flange set
Stereo Split and Stereo Spread off, pick triangular
modulation, Vintage type and adjust Depth and
Regeneration.
Phaser - A classic 12 stage emulation producing rich
textured phasing with plenty of control. You can
control the number of stages, feed forward and feed
back, and ‘zero’ depth manual mode to manually
sweep the Phaser using the offset control.
Gated Verb- An accurate emulation of the popular 80’s
Gated Reverb plus two other variants called ‘Panned’
and ‘Powerbox’. The user interface gives instant
access to Lo-cut Hi-cut decay spectrum filters and the
gate envelope controls - predelay, attack, hold and
release.
Back Panel view
Patching the FX
Touch the top right tab to select the Back Panel view.
Open the option list to select the type of FX patching.
Touch Apply to confirm any changes:

Mix>Return – Known as a ‘system effect’ this
uses a bus to Send a mix of the channels to the
effect, and a dedicated stereo FX Return channel
to add the ‘wet’ effect to the ‘dry’ original sound.
This is used for effects such as reverb and delay.
Choose which mix bus to use as its input. For the
Qu-16, FX1 and FX2 have dedicated buses. If you
want to use FX3 or FX4 as another system effect
you could patch one of the Mix1-10 buses as its
input.

Ch>Return – This is similar to a Mix>Return
system effect but fed from one channel rather than
a mix of channels. It uses the assigned input
channel Direct Output as its source. Examples
include a vocal channel delay, gated verb on a
snare, or chorus added to guitar.

Insert – Here the effect is patched in line with an
input channel or mix master. It is switched in or
out using the channel Insert switch. Inserted FX
provide a Dry/Wet control to balance the effect
with the original signal.
FX processing view
Press an FX Send or Return strip Sel key while the
Processing screen is active to view and work with its
parameters. Touch the top of the screen to open the
PEQ view and adjust its return channel equaliser.
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10.9
Working with FX – Adding vocal reverb:

Press the FX key to open the FX screen. Touch to select FX1.
Press the Fn key to open the Library page. Touch ‘Factory’.
Recall a Reverb into the FX1 slot if one is not already loaded.
Open the Back Panel view and check that FX1 is set for
Mix>Return with FX1 as its input.

Start by turning up a vocal channel fader while the master
strip LR mix is selected to hear the signal in the main PA mix.

Select the top layer to view the FX Return channel strips. Set
these faders to their ‘0’ position and check they are unmuted
to ensure the effect signals will be returned to the main mix.

Press the FX1 Mix key. The master strip now presents the
FX1 Send master fader and controls. The channel faders
move to show the sends to FX1.
Sends on
faders

Press the master strip Sel key to view the FX1 parameters on
the screen. Press the Fn key to access the library.

Set the master strip fader to its ‘0’ position and check that it is
unmuted to ensure the channel sends will be sent to the FX.

Move the vocal channel fader to adjust its send level to the
selected FX. This is similar to turning an Aux send knob on an
analogue mixer to feed an outboard effects unit.

You should now hear the reverb added to the dry vocal
signal. Adjust the send fader for the amount of reverb you
want. You can also send other channels to the reverb by
turning up their send faders, for example backing vocals and
instruments.

When done, remember to return the faders to the main mix by
turning off the FX1 Mix key or selecting the LR key.

You can assign the FX sends or returns to a Mute Group if
you want to be able to turn off all the effects with a single key,
for example between songs.

You can assign a SoftKey as a tap tempo key for a delay
effect. This lets you quickly tap in the beat for a vocal delay
without the need to open the FX screen.
Use the FX Library to recall different effects types and presets, or
to store your own parameter settings as User presets. Listen to
their effect on different signals and experiment with their levels
and settings so that you can use them as a creative tool while
mixing.
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10.10
Scene Memories
Qu provides 100 Scene memories. These store and recall a snapshot of all live mixing parameters.
Scenes have many applications. They can be used to store settings for bands during sound check for
recall before they take to the stage during the show. Scenes can also be used for cue recall during
theatre shows, or to provide a known starting point for different events or users in a multi-purpose venue.
The Scenes screen – Press the Scenes key next to the touch screen.
Scene list - Scroll through
scenes in the list.
The number available
depends on the range
allowed for the current
User.
Touch to highlight a scene
ready to store, recall or
edit.
Global Filter – Opens a tab
where you can ‘block’
combinations of parameters so
that they are not overwritten
when any scene is recalled.
This filter affects all scenes.
Safes – Opens a tab where
you can make combinations
of input and mix channels
‘safe’ so that none of their
parameters are overwritten
when any scene is recalled.
A red dot ‘o‘ displays when
one or more parameters are
blocked.
A blue dot ‘o‘ displays when
one or more channels have
been made safe.
Name – Touch to open
the screen keypad to
edit the scene name
with up to 14
characters. Entering a
name for a blank scene
will automatically store
its contents.
A green tick shows that a
scene has contents
stored.
Hold the Copy key and
touch a scene in the list to
copy its name and
contents. Hold Paste and
touch other scenes to
paste it to other locations.
Recall – Touch to recall
the scene highlighted in
the list.
Store – Touch to store
the current settings to
the scene highlighted in
the list.
 Stored contents are
Per Scene Filter – Each scene has its own
Recall Filter. Touch to open its Filter page. You
can block combinations of parameters so that
they are not overwritten when the scene is
recalled.
A red dot ‘o‘ displays if one or more
parameters are blocked by the Filter.
Hold the Copy key and touch a Filter button to
copy its settings. Hold Paste and touch other
Filter buttons to paste those settings into other
filters.
Clear – Touch to clear the
name and contents of the
highlighted scene. This also
clears the filter
Toolbar – The last recalled
(Curr:) and highlighted
(Next:) scenes are shown in
the lower toolbar.
not affected by the
Filter. All current
settings are stored. The
filter blocks parameters
on recall only.
Reset Mix Settings – This provides a quick
way to ‘Zero the board’ by resetting the mix
and processing to a typical starting point. To
avoid accidental operation the button must be
touched for 1 second or more to action the
reset.
 Reset Mix Settings affects all scene settings
and is not affected by the Global Recall Filter.
Hold the Reset key and touch Filter buttons to
clear all their blocked parameters.
 Reset Mix Settings restores the Local
preamps as the source to input channels.
Allowed parameters – These are
overwritten with the contents
stored in the scene when it is
recalled.
Blocked parameters – These are
not overwritten when the scene is
recalled.
Close the Filter page using the Fn key.
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A Scene stores the following:



















Preamp settings
Channel processing and linking
Channel patch and routing
Channel sends
Channel mutes
Channel faders/pan
Mix processing
Mix mutes
Mix faders
Group mode
Ducker settings
AMM settings
FX parameters
Output patch
Talkback assign and filter
Mute Groups
DCA Groups
Custom strip assign
SoftKey assign
Scene contents
A Scene is a ‘snapshot’ of the Qu mixer settings. It
stores the current layout and patch, and parameters
associated with live mixing. It does not store user
configuration, setup preferences and functions not
typically needed for live show recall.
Use the USB Show file function if you wish to archive
the full Qu configuration and Scene/Library memories.
A Scene does not store:








PAFL settings
Signal generator settings
USB record/playback settings
Scene preferences
User profile settings
User preferences
Network and MIDI settings
‘Custom Layer Only’ option
To Copy a Scene – Press and hold the Copy key
below the screen and then touch the scene to copy.
Now press and hold the Paste key and touch the
scene in the list to paste to. This copies the scene
contents and name.
The Safes screen
A Recall Safe protects all parameters for one channel.
Scene recall affects all input channels, FX and mixes.
You can make one or more of these ‘Scene Safe’ so
that none of their parameters are overwritten by any of
the 100 scenes. For example, walk-in music and
continuity microphone channels.
A blue dot ‘o‘ appears in the tab if one or more
channels have been made safe.
Input Safes – Make any combination of the sources to
the mixes safe – CH, ST1-3, FX Returns. Protects:
 Channel processing,
 Channel fader and pan
 Routing and sends to all the mixes
 Mute and DCA Group assignments
Mix Safes – Make any combination of the mixes safe –
Mix1-10, FX Sends1-2, LR. The Qu-24 includes Safes
for its Groups and Matrix mixes. Protects:
 Master processing,
 Master fader and balance
 Routing and sends from the channels
 Global channel send source
 Mute and DCA Group assignments
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The Filter screen
Filter parameters:
A Recall Filter protects one or more parameter
types for all channels.
Inputs/FX (All CH, ST, FX Ret, Groups)
 Input patch (Local, dSNAKE, USB)
 Preamps (Gain/Pad/Trim/48V/Pol)
 CH/ST process (Gate/PEQ/Comp/Dly/Duck)
 Group processing (not Qu-16)
 FX patch
 FX parameters
 Inputs/FX/Group Faders/Pan
 Inputs/FX/Group Mutes
 Inputs/FX/Group Names
A scene stores all live mixing parameters. A Recall
Filter can be set to protect (block) chosen
parameters from being overwritten when the
scene is recalled.
Each scene has its own filter. You can choose to
recall as many or as few parameters as you want
for each scene. For example, you could recall just
fader levels and mutes for a range of cues in a
theatre show.
The Global Filter protects parameters from being
overwritten by any of the 100 scenes.
Outputs (All FX Sends, Mix, LR, Matrix)
 Input patch
 Output patch (Sockets, Qu-Drive)
 Mix process (PEQ/GEQ/Comp/Dly)
 LR process (PEQ/GEQ/Comp/Dly)
 Matrix processing (not Qu-16)
 Master Faders
 Master Mutes
 Master Names
A red dot ‘o‘ appears in the tab if one or more
items have been blocked.
Filter parameters are grouped according to type
and association with inputs or outputs.
 The Qu-16 does not include Audio Groups and
Matrix outputs. Their associated parameters are
not included in its filter.
Routing
 Audio Groups (Assign)
 Mix sends (Lev/Pan/Assign/Pre)
 FX sends (Lev/Assign/Pre)
 Matrix sends (not Qu-16)
 Mute/DCA Groups (Assign)
Other
 Group Mode (not Qu-16)
 AMM
 Mute/DCA Group Masters and Names
 Custom Layer (Assign)
 SoftKeys (Assign)
 System (Talkback assign/HPF)
Qu Mixer Reference Guide
 The mixer reset default for the Global Filter is
Custom Layer and SoftKeys blocked.
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11. Touch Screen Setup Functions
Press the Setup key next to the Touch Screen to open the Setup screens.
Touch the top tabs to access the different categories
of setup function. Touch the tabs below to open up the
related options available.
Dimmer – Hold down the Setup key and turn the
screen rotary to adjust the screen and surface LED
brightness.
The Qu mixer always powers up with full brightness.
11.1
Audio Setup - PAFL
Choose how you want PAFL to work:
Additive mode – Select to listen to more than one
channel at a time. Pressing a PAFL key adds to the
previous selection. When off, the mode is Auto-cancel
to listen to one channel at a time where pressing a
PAFL key cancels the previous selection.
Input/Output PFL (pre-fade listen) – Monitor the signal
before the fader, for example to check it and set its
gain before you bring up the fader. This is the default.
Input/Output AFL (after-fade listen) – Monitor the
signal in stereo after the fader and pan so that you can
hear its contribution and position in the LR mix.
Sel follow PAFL – Link the Sel switch so that pressing
PAFL automatically selects the processing for that
channel.
PAFL follow Mix – With this option turned on, the
Master strip PAFL will follow the active Mix selected
using the Mix keys. This applies only if PAFL is first
selected using the Master strip PAFL key. Default for
this option is On.
LR to PAFL – Routes the main LR mix to the monitor
when there is no PAFL selected.
PAFL Delay – Delay the monitor to time align it with
the acoustic sound from the source when the mixer is
a long distance away from the stage. Start with 1ms
per foot.
PAFL Trim – Attenuate the PFL (pre-fade) signal by up
to 24dB to match it with the average AFL (after-fade)
signal which is often much lower than PFL. Default for
this option is 0dB (no attenuation).
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11.2
Audio Setup - Talkback
Set up and assign Talkback to talk to the musicians via
their monitors, or make announcements via the house
(PA) mix:
HPF – Dial in the High Pass Filter to remove low
frequency pops and resonance while talking. Factory
default is 120Hz.
48V – Hold for 1 second to switch on phantom power.
Gain – Adjust the talkback mic level.
T
Assign – Touch to toggle the assignments to the
different mixes on or off.
Press the surface Talk key to talk to the musicians or
house. Active Talk is indicated by the green [T] icon in
the lower toolbar.
Momentary Latch option - Press the Fn key to open
the Options screen to access the Talk option:
Option Off = Talk key is momentary action only. Press
and hold to talk.
Option On = Talk key latches on or off when you press
it quickly. It becomes momentary when you press and
hold it for longer than 0.5 second.
Select this option when you are working with a
switched talkback microphone and therefore want Talk
to be permanently selected.
11.3
Audio Setup –Signal Generator
Set up and assign the Signal Generator to test
loudspeakers and align levels between equipment.
Source – Touch to open the list of sources available:

Sine – Pure tone with adjustable frequency. Set to
1kHz and use meters to match equipment levels.

White Noise – Equal energy per Hz.

Pink Noise – Filtered white noise for equal energy
per octave. This is a good source to use for
testing loudspeaker drivers and phase. Its
response matches the way we hear frequencies.

Band-pass Noise – Pink noise filtered around a
frequency which can be swept from low to high.
Level – Start with the level set low to avoid unexpected
loud sounds when you assign to the mixes.
Mute – Turns the signal off.
Assign – Touch to toggle the assignments to the LR
and Mixes 1-10 on or off. Assignment to the Groups
and Matrix is not available on the Qu-16.
 To avoid noise in the system remember to turn the
assignments off when you have finished using the
generator.
 The Signal Generator is disabled when Talk is
active (green T symbol in screen toolbar). If you want
to use the generator make sure that Talk is not active.
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11.4
Audio Setup - Automatic Mic Mixer (AMM)
An Automatic Mic Mixer provides automatic level control of multiple microphones for spoken word
applications, for example conferences and discussion panels involving several participants each with their
own mic around a table. This improves intelligibility and can reduce the risk of feedback by dynamically
reducing the levels of mics which are not being spoken into. Once set, the AMM needs little or no change
at all whilst still allowing the engineer to maintain absolute control of the mix.
The AMM is intended for speech applications not
music.
Up to 16 channels (CH1-16 on all Qu models) can be
applied to the AMM.
The AMM affects post-fade channel sends to LR, the
mixes and FX. It does not affect pre-fade sends such
as monitors. It does not affect Direct Outputs.
AMM settings are stored in Scenes.
The AMM is located in the Setup / Audio / AMM
screen. It can also be accessed using the Qu-Pad app
AMM item in its Custom Strips.
How it works
This diagram shows the signal flow for AMM detection
and post fader gain control:
From CH1-16
Inputs
Sidechain Filter
AMM
Control
Out
AMM gain element
HPF
GATE
PEQ
COMP
From Preamp
DELAY
MUTE
FADER
To Mix
The AMM takes control by first setting each assigned
channel fader to '0' (0dB unity gain), thus effectively
passing the signal unaffected through the fader. It then
uses its own post-fade gain element to make its
automatic level adjustments before sending it to the
mix. It is typical to leave the faders at '0', but they can
be adjusted if the engineer wishes to make additional
post AMM level changes manually to adjust the relative
balance between mics in the mix.
AMM
auto gain
The AMM determines when microphones are open
(detecting a level or speech). It analyses the channel
signals at their post-Gate point. The PEQ, Comp and
fader do not affect AMM signal detection.
Signal detection uses a sidechain filter to filter out
sounds outside of the speech frequency range. This
can be set to prevent false triggering by ambient
noises in the room.
The AMM uses the Qu ‘D-Classic’ constant gain
sharing algorithm to dynamically adjust the gain for
each mic proportional to its input level and priority
setting. Louder signals will receive more gain in the
mix while quieter mics receive less and the overall gain
remains the same. Mics set for higher priority will get a
larger proportion of the gain.
When no one is talking the gain sharing ensures that
background ambience is maintained.
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Gain activity meter block – These level meters give you a real time
overview of the AMM gain distribution for all 16 channels. They light
for channels switched ON. Touch the left or right of the block to
bring CH1-8 or CH9-16 into the main view below.
ON/OFF – Touch to turn on the channels
you want to be affected by the AMM. The
AMM sets the channel fader to ‘0’, takes over
gain control and lights the gain meter.
 We recommend you first turn down the
mix master fader to avoid unexpected loud
sound in the PA if the gain structure has not
yet been set for the room.
AMM In/Out – You can switch the
AMM in or out to hear its effect on
the mix. Start with it switched In
and all channels turned OFF.
Gain Meter – Dynamically
shows the gain applied by the
AMM to each channel. You can
see how the gain is shared
when different combinations of
mics are active.
Gain range shown is -25dB to
+5dB.
The top of the light grey
section shows the 0dB
point where the AMM has
no effect on the gain. All
meters would read 0 when
the AMM is switched out.
One meter would read 0 it
was the only channel
turned on in the AMM.
Priority Level – For each channel you can set a priority 'level' which will offset the amount of gain
going into the mix calculation and therefore give a higher or lower artificial gain to that channel.
This is a variable slider with a range from -15dB (low priority) through 0dB (no offset) in the middle
to +15dB (high priority) at the top. For example, priority can be used to give the chairman or main
speakers a greater share of the gain when several people are talking, or to allow override of
audience question mics. Start with all Priority controls set to 0dB (mid position).
Sidechain Filter - Set High Pass and Low Pass filters
for the input open mic detection to cut off frequencies
below and above the normal speech range that may
cause false triggering of the mics.
Press the Fn key to open the Setup screen and access
the sidechain filter. The reset default settings are
250Hz and 5kHz.
Scenes and the AMM
AMM settings are stored in Qu Scenes. These can be
blocked from Scene recall using the Scene Filters.
Go to the Scenes / Global Filter screen to block or
allow AMM settings from all scene recall. Use the per
scene Filters to block the AMM from individual scenes.
User Permissions and the AMM
As the AMM is accessed in the Setup / Audio screen it
is always blocked from the Standard and Basic users.
It would be unusual to allow users other than Admin to
set up an automatic mic mixer. However these users
can still view but not change the AMM settings in the
Setup screen.
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11.5
Working with the AMM
Set up and position the microphones - It is best to use the same type
of microphone and position them so that the speaking participants are
not too close or too far from each mic. To avoid false triggering and
phasing set the distance from each voice to mic to be closer than the
distance between the mics. The distances from each mic to voice
should be similar for consistent operation.
 Start with the mix master fader turned down – The AMM takes
over level control and opens the channel faders to ‘0’ position. If the
master fader is up and the system gain structure not correctly set you
could get a sudden loud microphone level in the PA resulting in
possible feedback or audience distraction. Keep the master fader down
until you have set the channel mic gains as described below.
We recommend you use a DCA Group or an Audio Group (not
available on Qu-16) for master level control of the AMM channels if you
have other sound sources also routed to the PA. This would give you
independent master control over all the speech mics relative to the
other sources. An Audio Group could also allow quick EQ or
compression of all speech mics. If you use an Audio Group remember
to unassign the AMM channels from the LR mix.
Use PAFL to set the mic preamp gains and processing – You could
start by recalling the Channel Library V:Speech preset. Use the meters
and headphones to check audio level and quality. Set gain for the
loudest speech expected. Gain may need to be set quite high for quiet
speakers who are not close to the microphones. It is important that
average speech level reads high enough on the channel meter to
correctly trigger the AMM.
Adjust the channel HPF and PEQ to tailor the sound for speech –
Listen using headphones and filter out low frequency noise. Set the EQ
for speech intelligibility. A good starting point is HPF around 180Hz.
Assign the AMM - Switch the AMM In and assign the speech mic
channels ON. The associated channel faders will jump to their ‘0’ unity
gain position (fully open). Slowly turn up the group or mix master fader.
You should start to hear the microphones in the PA.
Test the AMM operation – View the AMM gain meters and listen to
check each mic in turn takes gain priority when spoken into. If the AMM
is being triggered by background noise make sure the participant is
speaking close enough to the mic, or try adjusting the AMM sidechain
filter. Use individual channel or group EQ to adjust the frequency
response for best speech clarity and to reduce the risk of feedback.
A few tips for working with the AMM
Qu Mixer Reference Guide

It is most important that the mic preamps are correctly set for
similar gains and healthy meter readings at expected speaking
distance.

Ring out the mics in the PA to ensure you have good gain before
feedback.

Try to leave the channels faders at ‘0’. If you need to adjust them
first check that the mic preamp gain is correctly set.

If any mics are not being used then make sure they are muted or
turned OFF in the AMM.

Experiment with the Priority control to give more gain to a more
important speaker. Try to keep most set to their centre 0dB
position.

If you are controlling the AMM using the Qu-Pad app you could set
up a Custom Layer with just the assigned mic channels and the
AMM strip. This means you can quickly access the AMM settings
and mic channel gains and processing.
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11.6
Control Setup – Custom Layer
The Qu-16, Qu-24 and Qu-32 mixers provide a custom
fader layer. The Qu-Pac does not have faders and
provides a custom Select key layer (see below).
The Custom Layer can have any combination of
channel, FX, master and MIDI strips assigned to its
faders. Faders can be left unassigned.
This lets you arrange the faders you are using for your
show into one convenient layer, or use the Custom
Layer to control your Digital Audio Workstation (DAW).
The screen presents an assignment button for each
fader. Touch a button and then turn the screen Rotary
to scroll through the available strips.
Use the Fn key ‘+1’ function to quickly assign strips in
sequence.
The following strip types are available:
DAW control – When working with a DAW (Digital
Audio Workstation) it is typical to assign all faders as
MIDI strips so that the Custom Layer can be used to
control the audio tracks within the DAW.
X
Unassigned
CH
Mono input channels
ST
Stereo input channels
FX Ret
FX returns
FX Send
FX sends
Mix
Mix masters 1-10
LR
Main LR master
Grp
Stereo Groups (not Qu-16)
MTX
Stereo Matrix (not Qu-16)
DCA
DCA Group master
MIDI
MIDI DAW control
To select the Custom Layer
Press both Layer keys together.
Touch button 1, turn the rotary until it displays ‘MIDI’,
then press Fn key ‘+1’ to quickly assign the other
strips for DAW control.
Turn on the ‘Custom layer only’ option if you want to
lock out the two standard layers and let the operator
work with just the Custom layer.
Use the space provided to label the custom strips.
Qu-Pac Custom Select Layer
The 16 Qu-Pac front panel Sel keys
can be user assigned to any
combination in a similar way to the
custom fader layer of the other Qu
models. This is a powerful feature for
quick mixing from the front panel.
The reset default is CH1-16 assigned
to the 16 keys.
 Custom Layer assignment is stored in scenes. They are blocked
from Scene recall by default. If you want these settings overwritten
when scenes are recalled then unblock the ‘Custom Layer’ item in the
Global Filter. Use the Scenes / Global Filter screen.
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11.7
Control Setup - SoftKeys
Qu-24 shown
Qu-16 provides 4 SoftKeys. The Qu-24 and Qu-32
provide 10. Qu-Pac provides 15. These are called
‘Soft’ because they can be assigned to different
functions by the user.
Function – Touch the box to open and choose from
the list of available functions. Touch Apply to confirm
the changes.
 SoftKey settings are stored in scenes. They are
blocked from Scene recall by default. If you want these
settings overwritten when scenes are recalled then
unblock the ‘SoftKeys’ item in the Global Filter. Use
the Scenes / Global Filter screen.
Unassigned – The SoftKey does nothing.
Channel Mute – Assign any channel, FX or
mix Mute to a SoftKey.
Mute Group – Becomes the Mute master
for the assigned Mute Group. This is the
factory default setting for SoftKeys 1-4.
DCA Mute – Becomes the Mute key for the
assigned DCA Group. You could use these
as extra Mute Groups if you set the DCA
master level to 0dB.
Tap Tempo – Use the SoftKey to tap in the
time setting for Delay FX. Choose L, R or
L+R (both to follow the same tap).
Recall Scene – Instantly recalls the scene
number assigned to the SoftKey.
Set Auto Increment if you want to step
through your scenes using a single key.
This recalls a scene, then advances to the
next available scene ready to recall it
when the key is pressed again. For
example, step through your cues in a
theatre show. Auto-increment skips blank
scenes.
Scene Store Current – Instantly stores the
current mixer settings to the last recalled
scene. This is shown in the ‘Curr:’ bar.
Scene Recall Go – Instantly recalls the
Scene shown in the ‘Next:’ bar.
Scene Next – Advances to the next scene in the list.
Scene Previous – Steps back to the previous scene.
PAFL Clear – Set a SoftKey to clear any active PAFL
keys. The SoftKey lights to show when a PAFL is
currently selected.
Qu-Drive – Set SoftKeys as transport controls for
stereo and multitrack recording and playback. Touch
and scroll using the rotary to select the transport
control required.
MMC – Set SoftKeys as transport controls for MIDI.
DAW Bank Control – Set SoftKeys as DAW Bank
up/down controls.
Talkback – Assign a SoftKey as the Talk switch. This is
useful when using the Talkback function on Qu-Pac
which does not have a dedicated Talk key.
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11.8
Control Setup - Network
Use this screen set the TCP/IP address for the Network
port and the name used to identify the Qu mixer on the
network.
It is important that the network address is compatible
with the addresses of equipment connected to the
port, for example a laptop providing MIDI control of
mixer parameters, or a wireless router providing
remote control using the Qu-Pad iPad app.
DHCP – Enable this if the connected device has DHCP
capability and is therefore able to automatically
allocate a compatible IP address to the mixer. This is
the factory default and is the typical setting for
connecting to a wireless router used to interface with
an iPad.
For manual setting of the network address, enter
compatible IP Address, Subnet Mask and Gateway
settings.
Unit Name – Enter a name with up to 15 characters to
identify the Qu mixer on the network. The default name
is the model number, for example, ‘Qu-16’ or ‘Qu-24’.
11.9
Control Setup - MIDI
The Qu mixer can send and receive MIDI messages for remote control of many of its functions. It also
provides MMC transport control from this page, or assigned to SoftKeys. The Qu uses two MIDI channels,
one for Qu mixing functions, the other for DAW control using the Custom Layer.
MIDI over USB – The rear panel USB B port allows
direct connection to Apple® Mac computers running
OSX 10.6 or later. This carries MIDI and audio
streaming. USB B is the recommended connection for
DAW and other computer based MIDI control.
MIDI control available:


















Mutes
Faders and Pan
Audio Group Assign (not Qu-16)
Mix and FX Sends, Pan, Assign, Pre
LR Assign
Matrix sends, Pan, Assign, Pre (not Qu-16)
Mute/DCA Group Assign, master Mute
PAFL select
Input channel source
Preamp Gain/Trim, Pad, 48V
Insert In/Out
Input Polarity, Gate, PEQ, Comp, Delay
Mix PEQ, GEQ, Comp, Delay
Scene Recall
FX Tap Tempo
MIDI Custom strips (DAW control)
MMC (MIDI transport control)
Bank Up/Down (DAW control)
Qu Mixer Reference Guide
 USB MIDI is supported natively by the Mac so no
driver is needed. A driver for Windows® computers can
be downloaded from the Allen & Heath web site.
MIDI over TCP Network – The rear panel Network
port is used for connection to a Wi-Fi router to work
with an iPad running the Qu-Pad app. The app uses
these MIDI messages to remotely control the Qu
mixer. Alternatively, the Network port can be used with
a touch panel or other remote controller that allows
configurable MIDI over a TCP/IP port.
 Qu currently allows only one TCP connection at a
time over its Network port.
MIDI channel number – The Qu uses two MIDI
channels, one for mixing functions and the other for
DAW control. Choose and Apply the mixing function
MIDI channel. DAW control will use the next MIDI
channel above that.
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AP9372 iss.9
11.10
Control Setup - Preferences
This screen presents user preferences for the control
surface. Set these according to how you prefer to
work.
These settings are stored with Show files. They are not
stored in Scenes.
PEQ Graph Fill – When turned On, the processing
screen PEQ graph displays a colour fill. There are 4
colours which match the frequency bands.
The system reset default is the Fill option turned On.
Processing Screens Follow Surface – When turned
On, adjusting a processing screen physical control
(rotary or key) will cause the screen to open the
related processing view.
This function is available only while the Processing
screen is active.
This option does not apply to Qu-Pac.
The system reset default is the Follow Surface option
turned Off.
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11.11
USB Data – Scene Transfer
Individual Scenes can be transferred between Qu
mixers via a USB device (key or drive) plugged into the
Qu-Drive port. This provides a quick way to transfer
settings without overwriting the current scenes and
preferences.
Make sure the USB device has been previously
formatted using the Qu mixer Utility / Qu-Drive
screen.
The list on the left displays a list of scenes stored in
the Qu mixer. The list on the right displays those found
on the USB device. Scenes are transferred as data
files numbered from ‘0’. Both the number and name
will appear in the USB list.
To Qu – Touch to highlight a USB Scene to transfer to
the mixer. Touch a Qu Scene to highlight the position
to transfer to. Once both are highlighted touch ‘to Qu’.
A confirmation box appears if you are about to
overwrite an existing scene. Once transferred, the
highlighted scenes increment ready to transfer the
next if required.
To USB – Highlight both positions as above. Touch ‘to
USB’ to transfer the scene to the USB device.
Delete – Highlight a scene in the USB list. Touch
‘Delete’ to remove it.
11.12
USB Data – Library transfer
Individual processing and FX Libraries can be
transferred between Qu mixers via a USB device (key
or drive) plugged into the Qu-Drive port.
Make sure the USB device has been previously
formatted using the Qu mixer Utility / Qu-Drive
screen.
The list on the left displays a list of libraries stored in
the Qu mixer. The list on the right displays those found
on the USB device. Libraries are transferred as data
files numbered from ‘0’. Both the number and name
will appear in the USB list.
To Qu – Touch to highlight a USB Library item to copy
to the Qu mixer. Touch ‘to Qu’ to copy the item. Once
copied, the highlighted library increments ready to
copy the next if required.
To USB – Touch to highlight a Qu Library item to
transfer via USB. Touch ‘to USB’ to copy the item to
USB. Once copied, the highlighted library increments
ready to transfer the next if required.
Delete – Highlight a library in the USB list. Touch
‘Delete’ to remove it.
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11.13
USB Data – Show transfer
Qu mixer settings can be stored to a USB device (key
or drive) plugged into the Qu-Drive port. Data can be
archived to computer and transferred between Qu
mixers.
A ‘Show’ stores all the Qu mixer settings and
memories. It is stored as a set of files in a numbered
folder on the USB device. Shows are not stored in the
Qu mixer.
A Show stores the following:





Current mixer settings
Mixer setup and preferences
All Scenes
All User Libraries
MIDI channel number
A Show does not store:


Network settings
User profile settings
The Qu mixer displays a list of Shows found on the
USB device. Shows are numbered from ‘0’. They can
be named. Both the number and name will appear in
the USB list.
Make sure the USB device has been previously
formatted using the Qu mixer Utility / Qu-Drive screen
(described later in this guide).
Store New – Touch to store a new Show folder on the
USB device. This opens the screen keypad for naming
the Show.
Recall – Select a Show in the USB list. Touch the
button to overwrite the current Qu mixer settings with
the contents of the USB Show. A popup will appear.
 If you want to keep your existing Qu settings then
store these first as a new Show before recalling
another Show.
Overwrite – Existing USB Shows can be overwritten
with the current mixer settings. Touch to overwrite the
highlighted Show in the USB list with the current Qu
mixer settings.
Name – Touch the Name box to open the screen
keypad and rename the Show highlighted in the USB
list.
The Show folder
Each Show is stored as a set of data files within a
numbered folder in the AHQU / SHOWS directory. The
first show is numbered ‘0’.
 Do not rename or edit the Show folder or its files.
If you want to archive the Show on your computer we
recommend you copy the numbered Show folder to a
new named directory on your computer. To use the
Show again copy just the numbered Show folder back
into the SHOW directory of the USB device.
 Do not change the format of the Show folder. Its
name must have 8 characters = SHOWnnnn where
nnn is a number from 0000 upwards.
 The Show name is stored within a data file in the
numbered Show folder on the USB device. The name
is not part of the folder name. It is held within the
SHOW.DAT file in the folder.
To view the Show name on your computer – Open
the numbered Show folder and find its SHOW.DAT text
file at the end of the list. Open the file to view the Show
name. Do not edit the file.
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11.14
I/O Patch Setup – Surface
Use this screen to patch signals to
the rear panel Alt Out and AES
outputs. Touch a box to open up the
list of available options. Changes are
applied instantly. You can also touch
outside the list to exit.
Alt Out – Choose the source for the
rear panel stereo Alt Out jacks.
AES Out – Choose the source for
the rear panel AES digital output.
The reset default for both is LR postfade.
Group and Matrix outputs are not
available on the Qu-16.
The Alt Out and AES Out are not provided on Qu-SB.
11.15
I/O Patch – dSNAKE In
Use this screen to patch AudioRack input sockets to
the Qu input channels. You can connect up to two
AudioRacks via the dSNAKE Cat5 digital snake.
The button code indicates dSNAKE device:
N/C = No AudioRack is connected
Main = First AudioRack
Expander = Second AudioRack (expander)
Touch a Channel box and turn the screen rotary to
scroll through the dSNAKE socket numbers. These
relate to the AudioRacks currently connected, or to the
dSNAKE channels if no AudioRack is found.
Any AudioRack socket can be patched to any channel.
A socket can be patched to more than one channel. A
channel can only have one socket patched to it.
Touch Apply to confirm changes.
The reset default for the Qu-16, Qu-24 and Qu-32
models is one-to-one mapping of sockets to channels.
The reset default for Qu-SB and Qu-Pac is:
CH1-16 = Local 1-16,
CH17-32 = dSNAKE 1-16
This is because Qu-Pac and Qu-SB can be used as a
stage rack with their 16 local inputs as the source to
CH1-16. One AudioRack connected to the dSNAKE
port could feed CH17-32 to provide the full 32
channels.
Input patching is stored in Scene memories.
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AP9372 iss.9
11.16
I/O Patch Setup – dSNAKE Out
This screen presents the patching for the dSNAKE
remote audio outputs. These outputs can be mapped
from any combination of Qu mixer output sources.
The Qu mixer detects which AudioRack type is
connected. A Qu system can have up to two
AudioRacks connected. These are shown as:
dSNAKE – The first (main) AudioRack connected.
Expander – The second (expander) AudioRack.
dSNAKE outputs can be patched with or without
physical AudioRacks connected.
The following sources can be patched:
X
Unassigned
Grp
Group post-fader
Mix
Mix 1-10 post-fader
LR pre
LR mix – pre-fader
LR post
LR mix – post-fader
L+R pre
LR mono sum – pre-fader
L+R
LR mono sum – post-fader
MTX
Matrix post-fader
PAFL
Stereo PAFL monitor
All Qu mixer patching is stored in Scene memories.
The Reset Mix Settings defaults are shown below:
Qu-16 Reset dSNAKE Patch
dSNAKE Qu out
1
2
3
4
5
6
7
8
Mix 1
Mix 2
Mix 3
Mix 4
Mix 5
Mix 6
Mix 7
Mix 8
Ch
9
10
11
12
Qu out
Exp
Mix 9
Mix 10
L
R
1
2
3
4
5
6
7
8
Qu out
none
none
none
none
none
none
none
none
Qu-24, Qu-32, Qu-Pac, Qu-SB Reset dSNAKE
Patch
dSNAKE Qu out
1
2
3
4
5
6
7
8
Qu Mixer Reference Guide
73
Mix 1
Mix 2
Mix 3
Mix 4
Mix 5
Mix 6
Mix 7
Mix 8
Ch
9
10
11
12
Qu out
Exp
Qu out
Mix 9
Mix 10
L
R
1
2
3
4
5
6
7
8
MTX1 L
MTX2 R
MTX3 L
MTX4 R
Grp1 L
Grp2 R
Grp3 L
Grp4 R
AP9372 iss.9
11.17
I/O Patch Setup - Monitor
This screen presents the patching of the dSNAKE
remote monitor audio outputs. This allows the Qu
mixer to work with the Allen & Heath ME Personal
Monitor mixing system.
A ME-1 mixer or ME-U distribution hub can be plugged
into any of these sockets:




Qu rear panel dSNAKE port
AR2412 MONITOR port
AR2412 EXPANDER port
AB168 EXPANDER port
There are 40 Monitor output channels. These can be
patched from any input channels, FX, Groups, Mixes
and PAFL.
Mono (CH) and stereo (ST) channel sends follow the
Global Direct Output settings. Mixes are postprocessing, post-mute, post-fader.
 Set the Global Direct Out source using a channel
Routing screen. Set pre-fade, post-mute when
working with the ME Personal Monitor System.
Qu-16 Reset Default Monitor Patch
Ch
1
2
3
4
5
6
7
8
Qu out
Ch
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
9
10
11
12
13
14
15
16
Qu out
Ch
CH9
CH10
CH11
CH12
CH13
CH14
CH15
CH16
17
18
19
20
21
22
23
24
Qu out
ST1 L
ST1 R
ST2 L
ST2 R
ST3 L
ST3 R
Main L
Main R
Ch
25
26
27
28
29
30
31
32
Qu out
FX1ret L
FX1ret R
FX2ret L
FX2ret R
FX3ret L
FX3ret R
Mix1
Mix2
Ch
33
34
35
36
37
38
39
40
Qu out
Mix3
Mix4
Mix5 L
Mix6 R
Mix7 L
Mix8 R
Mix9 L
Mix10 R
Qu-24 Reset Default Monitor Patch
Ch
1
2
3
4
5
6
7
8
Qu out
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
Ch
9
10
11
12
13
14
15
16
Qu out
CH9
CH10
CH11
CH12
CH13
CH14
CH15
CH16
Ch
Qu out
17
18
19
20
21
22
23
24
CH17
CH18
CH19
CH20
CH21
CH22
CH23
CH24
Ch
25
26
27
28
29
30
31
32
Qu out
ST1 L
ST1 R
ST2 L
ST2 R
ST3 L
ST3 R
FX1ret L
FX1ret R
Ch
33
34
35
36
37
38
39
40
Qu out
Grp1 L
Grp2 R
Grp3 L
Grp4 R
Mix7 L
Mix8 R
Mix9 L
Mix10 R
Qu-32, Qu-Pac, Qu-SB Reset Default Monitor Patch
Ch
1
2
3
4
5
6
7
8
Qu out
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
Ch
9
10
11
12
13
14
15
16
Qu Mixer Reference Guide
Qu out
CH9
CH10
CH11
CH12
CH13
CH14
CH15
CH16
Ch
Qu out
17
18
19
20
21
22
23
24
74
CH17
CH18
CH19
CH20
CH21
CH22
CH23
CH24
Ch
25
26
27
28
29
30
31
32
Qu out
CH25
CH26
CH27
CH28
CH29
CH30
CH31
CH32
Ch
33
34
35
36
37
38
39
40
Qu out
Grp1 L
Grp2 R
Grp3 L
Grp4 R
Mix7 L
Mix8 R
Mix9 L
Mix10 R
AP9372 iss.9
11.18
I/O Patch Setup – USB Audio
This screen presents the patching of the USB audio
outputs. This includes the Qu-Drive Stereo, Qu-Drive
Multitrack and the USB B audio streaming.
The Qu-16 provides 24 patchable USB outputs. The
Qu-24, Qu-32, Qu-SB and Qu-Pac provide 32 USB
outputs.
Qu-Drive and USB B streaming share the same block
of patchable tracks:



Qu-Drive Stereo = Track 17-18
Qu-Drive Multitrack = Track 1-18
USB B Streaming = Track 1-32 (Qu-16 has 24)
There are two screens:


Track 1-18 = Tracks associated with Qu-Drive
Track 19-32 = The rest of the tracks for USB B
Touch the lower left ’19-32’ or ‘1-18’ buttons to
navigate between the screens
Touch a button and then turn the screen Rotary to
scroll through the available output sources.
Use the Fn key ‘+1’ function to quickly assign strips in
sequence.
Once you have chosen the outputs press Apply to
accept or Cancel to discard the changes.
CH/ST/Grp source button
Set this to Insert Sends if you do not want the input
channel and group USB sends to be affected by the
mixer processing (EQ, Comp, Gate, Delay). This sends
the raw Preamp and unprocessed Group signals to the
USB stream and is the typical setting for live recording.
Set this to Direct Outs if you want the input channel
USB sends to follow the channel global Direct Output
option. It also sets the Group sends to be postprocessing and post-fader. This is the typical setting
for studio recording (working with a DAW).
The following sources can be patched:
 The global Direct Output option affects all inputs
and is set in the channel Routing screen.
X
Unassigned
CH
Mono channel (Insert or Direct Out)
ST
Stereo channel (Insert or Direct Out)
FX Ret
FX returns 1-4 pre-fader
Grp
Group (Insert or post-fader)
Mix
Mix 1-10 post-fader
LR pre
Main LR mix – pre-fader
The USB Audio factory reset default patching varies
according to Qu model. All ensure that tracks 17-18 =
LR post-fader for Qu-Drive stereo recording. The
patching can be changed here to suit your
requirements.
LR post
Main LR mix – post-fader
 Set the USB Audio Patching before using Qu-Drive
L+R pre
Main LR mono sum – pre-fader
MTX
Matrix post-fader
PAFL
Stereo PAFL monitor
Qu Mixer Reference Guide
Output sources are post processing, post fader.
or USB streaming.
75
AP9372 iss.9
11.19
Utility - Calibration
Use the routines here to calibrate the touch accuracy
of the Touch Screen and positional accuracy of the
Motor Faders.
Follow the on-screen instructions.
11.20
Utility – Qu-Drive
This screen lets you check and format a USB device
(key or hard drive) for use with Qu-Drive. Once
formatted you do not need to format it again.
 Formatting the USB device will erase all current
data on it. If you want to keep this then make sure you
archive the data elsewhere first.
For reliable performance you must first format your
USB device using the Qu mixer Format utility. Once
formatted, use this with Qu only. Do not use the device
for other applications.
 Qu-Drive audio recording and multitrack
playback require the USB storage device to
support high sustained transfer rates. Not all USB
devices will guarantee flawless performance.
To find out more please refer to the ‘Understanding
Qu-Drive and USB’ document in the Qu
Knowledgebase on the Allen & Heath web site.
Once formatted on the Qu mixer, use the USB
device with the mixer only. Do not use it for other
storage and applications.
Plug in the USB device. Wait for the mixer to read the
drive. The status window displays information about
the USB device:
File system: OK
(no need to format)
File system: Unsupported (you need to format it)
Touch Format to start formatting. When complete, wait
a few seconds for the mixer to read the key. If
successful the status window will display ‘OK’.
 Do not remove the USB device or turn off power
until formatting is complete.
Qu Mixer Reference Guide
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AP9372 iss.9
11.21
Utility – Firmware Update
The Qu mixer operating firmware can be easily
updated using a USB device (key or drive).
Make sure the USB device has
been previously checked and
formatted to work with the Qu
mixer.
If you need to format the device
then use the Format facility in
the Setup / Utility / Qu-Drive
screen.
Step1
Note From V1.82 onwards the
firmware files are packaged as .zip
archives.
This affects the firmware update
procedure. Refer to Step 3 below.
Download the firmware
Visit the Allen & Heath web site and download the latest Qu16, Qu-24, Qu-32 or Qu-Pac firmware. The file is packaged
in a .zip archive and its name includes the model and version
number, for example: Qu16UpdtV1_82_4387.zip. Save the
file to your computer.
Read the Release Notes available on the download page.
Step2
Remove previous Qu Firmware from USB
It is important to remove previous firmware files as the Qu will
attempt to load the first version file it finds. The firmware file is
in the root directory of the USB device and has a .QUU
extension.
Step3
Extract the .QUU file to the USB root directory
The Qu mixer will look for a valid firmware file in the root
directory of the USB device. Unzip the downloaded file on
the computer and make sure the extracted .QUU file is
placed in the root directory of the device.
Step4
Run the Firmware Update
Plug the USB device into the Qu-Drive port.
Open the Setup / Utility / Firmware screen. If valid firmware
is found its version number will be displayed on the screen.
For example:
Touch the Update button. The update will start immediately.
during the update. For Qu-16, Qu-24 and Qu-32 models the
screen goes blank and the Pan control indicators flash in
sequence during the update. For the Qu-Pac the SoftKey
indicators flash in sequence while the update is running.
After a few minutes the mixer will reboot.
 Important note
Do not remove power during the
firmware update. Do not remove the USB device until the
update has completed.
The mixer restarts automatically after the firmware update.
You may need to re-calibrate the faders using the Setup /
Utility / Calibration screen after the update.
Qu Mixer Reference Guide
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AP9372 iss.9
12. USB Audio Interface and DAW Control
The Qu mixer can stream audio and send MIDI messages to and from an Apple® Mac or Windows® PC
computer via the rear panel USB B port. This lets you work with a DAW (Digital Audio Workstation)
running on your computer. The Custom Layer can provide MIDI control faders and keys. You can work
with the standard Qu MIDI messages or download the Allen & Heath DAW Control driver to convert these
into one of the popular HUI or Mackie Control protocols.
12.1
Audio streaming
Apple® Mac
USB audio streaming with Qu MIDI message control is supported
natively by the Mac so it does not require any driver.
Windows® PC
USB audio streaming with Qu MIDI message control needs a driver.
Download and install the Allen & Heath Qu Windows Driver. Power up
the Qu mixer, connect its rear panel USB B port to the PC, run the
installer and follow the instructions on the screen. The driver is ASIO 2.2
compliant and supports standard WDM/DirectX Windows interfaces
including MME and DirectSound.
Connect the Qu mixer to the computer – Plug a
suitable cable into the rear panel USB B port.
Stream audio to the computer – Audio is sent via the
rear panel USB B port. Go to the Setup / Output
Patch / USB Audio screen to choose which Qu
outputs to patch to the USB stream.
The following sources can be patched:
X
Unassigned
CH
Mono channel (Insert or Direct Out)
ST
Stereo channel (Insert or Direct Out)
FX Ret
FX returns 1-4 pre-fader
Grp
Group (Insert or post-fader)
Mix
Mix 1-10 post-fader
LR pre
Main LR mix – pre-fader
LR post
Main LR mix – post-fader
L+R pre
Main LR mono sum – pre-fader
MTX
Matrix post-fader
PAFL
Stereo PAFL monitor
CH/ST/Grp source button
Set this to Insert Sends if you do not want the input
channel and group USB sends to be affected by the
mixer processing (EQ, Comp, Gate, Delay). This sends
the raw Preamp and unprocessed Group signals to the
USB stream and is the typical setting for live recording.
Set this to Direct Outs if you want the input channel
USB sends to follow the channel global Direct Output
option. It also sets the Group sends to be postprocessing and post-fader. This is the typical setting
for studio recording (working with a DAW).
 The global Direct Output option affects all inputs
and is set in the channel Routing screen.
Stream audio back to the Qu mixer – Audio is
returned via USB B. This is mapped one-to-one to the
inputs channels. Use the Preamp screen Fn key
Source page to patch USB B to the channels.
Make sure you have set ‘USB B Streaming’ as the
global USB source.
Qu Mixer Reference Guide
78
AP9372 iss.9
Mac - Change this in the OS X preferences.
Go to Utilities / Audio MIDI Setup / Audio
Devices, select the Qu mixer and click on
Configure Speakers. Then assign stereo
Left and Right to the required interface
output.
PC – From Qu Windows Driver version
2.20.5 onwards this audio returns to the
Qu-16 and Qu-24 ST3 channel, or to CH3132 for the Qu-32. Download the latest driver
from the Allen & Heath web site.
12.2
 Most DAWs allow flexible patching and routing of
tracks to/from any interface I/O. However if you are
using iTunes, QuickTime or similar for playback to the
mixer, the stereo output will default to the Qu Input CH
1 and 2. You can change this manually on the Mac,
and use the latest version of the Qu Windows Driver on
the PC.
DAW Control
Set the Qu mixer MIDI channel number – Use the
Setup / Control / MIDI screen to set the Qu MIDI
channels. Qu DAW control uses its own MIDI channel.
This is the next number up from that set for the other
Qu MIDI messages. Qu defaults to Channel 1 for
standard messages and Channel 2 for DAW control.
Set the Custom Layer for fader control – Use the
Setup / Control / Custom Layer to assign the faders
as MIDI strips. MIDI Strip controls transmit and receive
CC and Note on/off messages. Refer to the Qu MIDI
Protocol Document on the Allen & Heath web site for
further information.
DAW control (MIDI channel N+1)):




Mute key / indicator
Sel key / indicator
PAFL key / indicator
Fader movement
=
=
=
=
Mute
Select
Solo
Fader
The MIDI messages can be manually assigned or
‘learned’ by most DAWs. However if you wish to
convert the standard Qu MIDI messages into the HUI
or Mackie Control protocol, download and install the
Allen & Heath DAW Control driver. Follow the setup
instructions in its Help Manual.
 DAW Control for Windows will be released
shortly after V1.9 firmware release.
Set the MIDI channel to be the same as the Qu mixer
DAW channel. For USB connection select MIDI Ports.
Select the MIDI Input and Output ports to be used.
Select the Custom Layer
Two squares in the status bar flash to display MIDI I/O
activity. To check you are connected to the mixer, the
left square should flash when you move any Qu fader.
DAW Bank Up/Down – You can assign SoftKeys as
Bank Up and Bank Down to scroll through the banks
on the DAW when using DAW Control (Mac computers
only)
MMC transport Control – Transport controls are
available in the Setup / Control / MIDI screen. These
can also be assigned to SoftKeys for quick access.
Assign the SoftKeys using the Setup / Control /
SoftKeys screen.
Qu Mixer Reference Guide
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13.Qu-Pac Qu-Control Screen
Qu-Control is a custom assignable screen which lets you present just the few controls needed for basic
operation. For example, to control background music source and level within a music bar. It can be
associated with the Qu ‘Basic User’ with permissions set by the ‘Admin’ user so that only this screen is
available for non-technical bar staff, for example to adjust the background music. Access to the live
mixing and setup functions can be locked out for the Basic User.
 The Qu-Control screen is available on Qu-Pac only. However, the Qu-Control app
for iOS devices is compatible with all Qu mixers. The app replicates the Qu-Control
functionality for wireless remote control.
Qu-Control key
Setup page
Qu-Control key - Press to open the Qu-Control screen. This presents buttons and
level controls configured by the Admin user. If none have been configured the screen
will be blank. Tabs allow access to up to 5 custom screens.
Touch a button to toggle its state. Touch to highlight a level control and adjust it using
the screen rotary.
Setup page - Press the Fn key to open the Qu-Control setup page for the currently
active tab. This is only available to the Admin User.
Functions can be assigned to up to 15
positions arranged as a grid of 3 rows with 5
columns. If a position is unassigned then it will
appear blank in the user screen.
Touch to open the Function list. You can
choose mutes, level or assignments (On/Off)
associated with channels or mixes.
Send On/Off Radio lets you assign a selection
of buttons to operate in ‘radio mode’ where
pressing one will turn the others off.
Touch and spin the rotary to scroll through the channels or mixes. Once you have
finished assigning the screen press Apply to save and exit or Cancel to exit without
saving.
 Qu-Control settings are stored to USB device as part of the Show file. They are not
stored in Scene memories.
User Permissions - Three user profiles are available. The ‘Admin’ User can set
access for the ‘Standard’ and ‘Basic Users. Various parameters can be blocked and
passwords can be set. Go to the Home / User screen to set user permissions or log in
as a different user.
Example:
Qu Mixer Reference Guide
Admin User
Standard User
Basic User
Engineer in charge of the installation
Mixes live shows, blocked from setup functions
Controls background music only
80
AP9372 iss.9
14. iOS Apps for Wireless Control
Two Qu apps are available from the Apple Store:
Qu-Pad - Engineer’s live mixing control
Qu-You - Musician’s personal monitor control
Qu-Control – Customisable app for install
You can connect up to two iPads running Qu-Pad and up to 8 iPhones, iPads, iPod Touch or Android
devices running Qu-You or Qu-Control. The maximum total number of connected devices is 8.
 Refer to the Qu-Pad, Qu-You and Qu-Control Help Manuals for details on their
operation and setup.
Qu-Pad is an engineer's mixing tool giving you the freedom to
walk the room or stage and control the sound right where it is
needed. Since V1.9, Qu-Pad gives you control of the live mix and
full system setup. Qu-Pad and the Qu console can work together
to provide simultaneous control of independent functions, for
example one engineer using the console to mix front-of-house
sound, and another using the iPad to mix monitors on stage.
Qu-Pad runs on all models of iPad running iOS7.1 or higher. The
current version tested at the time of this release is iOS9.

Qu-You provides personal monitor mix control for
musicians and performers on stage. The engineer can
still keep an eye on and control each mix at the Qu
mixer at any time.
Qu-You runs on Apple iOS devices including iPhone4
or later, iPad, iPad Mini or iPod Touch running iOS7 or
later. A version is also available for Android devices.
Qu-Control is a customisable app with up to five
screen tabs and up to 15 control ‘widgets’ per tab.
These can be anything from background music
source selection to a master zone level or microphone
paging. A password for Qu-Control users can be set at
the mixer.
Qu-Control runs on Apple iOS devices including
iPhone4 or later, iPad, iPad Mini or iPod Touch
running iOS8 or later.
Using the Qu-Pad, Qu-Control or Qu-You app
Qu Mixer Requirements - The Qu mixer firmware and app feature release version
number must be the same, for example V1.7 firmware will not run with a V1.8 app.
However, the maintenance version numbers do not need to be identical, for example QuPad V1.90 would run with Qu mixer V1.91. Refer to the Allen & Heath web site for more
information and to download the latest Qu mixer firmware.
Set up the wireless network – Connect and configure a suitable wireless router as
described below. Connect the device to this network.
Start the app and log in to the Qu mixer – The app opens in its Login page. You
should see your Qu mixer in the list if it is recognised on the wireless network. Select this
and touch Connect. Enter the password if one has been set for Qu-You users at the
mixer.
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Setting up the Qu wireless network
The app sends and receives control data over a wireless (Wi-Fi) network. This requires a wireless router
(wireless access point) connected to the Qu mixer Network port.
Control device
Qu mixer
Wireless router
Qu Network port
Cat5 cable
Choosing a wireless router - For best performance we recommend you use a dual band (2.4 and 5GHz)
wireless router (wireless access point) with auto channel selection. A wireless router with auto channel
selection automatically sets itself to an available or least congested channel when you power it up.
Setting up the Qu mixer Network - The default setting is DHCP enabled. This is recommended as it
means that the mixer gets it network IP address automatically from a DHCP enabled router. Go to the
mixer Setup / Network screen to check that DHCP is enabled.
If you choose to use manual network settings then you need to make sure that both the mixer and the
router have compatible TCP/IP addresses.
Setting up the wireless router – The default settings of many routers are immediately compatible with
the Qu mixer so you should be able to connect quickly. However, if you do experience difficulty or wish to
change security settings then you will need to access the router setup utility. To do this, connect the
router to a PC or Mac using a wired LAN (network) connection to access its setup menus. Follow the
instructions provided by the wireless router manufacturer.
Wireless router DHCP settings - Make sure the router is set for DHCP so that it automatically allocates a
compatible IP address to your control device. This is the default setting for most routers.
Wireless security -To prevent other people accessing your Wi-Fi we recommend you enable WPA/WPA2
encryption. A wireless key (password) will need to be assigned. Make a note of this as it will be needed to
log on to the network. MAC address filtering is another method that can be used for security.
SSID - This is the name broadcast by the wireless router to help identify it in the network list you will see in
the device Settings Wi-Fi page.
Positioning your wireless router – It is important that your control device operates within the specified
range and in line of sight of the wireless router. Place it high up to avoid obstacles such as people and
equipment. Avoid locating it behind pillars or walls, near metal beams or on top of loudspeakers.
Connecting to the wireless router - Make sure the device Wi-Fi is turned ON in its Settings screen.
Choose your wireless router from those shown in the Network list. Enter the password to connect to the
router. After a few moments a tick should appear to show the device has successfully connected to the
wireless network. Check that the icon in the device top toolbar shows good Wi-Fi signal strength.
 To prevent unauthorised control of your Qu mixer we strongly recommend that you password protect
your wireless network.
 The iPad remembers the network settings. To prevent an device connecting again in future without the
password, for example if you have given a guest engineer access your Qu with their own device, select
your network in their device Settings Wi-Fi menu and use the 'Forget this network' function.
If you experience connection problems or drop outs – You may suffer interference from other wireless
networks or equipment in the area. Try rebooting the router to pick up a different channel, or change its
band (2.4 or 5GH).
Qu Mixer Reference Guide
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15.Resetting the Mixer
There are two ways to reset the Qu settings:
15.1
Reset Mix Settings – A starting point for mixing
This button in the Scenes screen resets the mixer to a
known starting point for mixing. It provides a quick way
to reset the processing, mixes and patching before a
show or after another user has finished with it.
All parameters that can be stored in Scene memories
are reset to a factory default. Parameters that are not
stored in scenes are not affected. This reset does not
affect existing scenes stored in the mixer.
If you want to keep your current settings then save
these as a Scene before resetting the mixer.
 This reset is not affected by the Global filter and
Safes settings.
Reset mix settings:



































Source Preamp, Gain 28dB, 48V off
ST1-3 trim 0dB
HPF out, 100Hz
PEQ and GEQ in, flat
Gates out, thres -36dB, depth 20dB
Comp out, thres 0dB, ratio 3.2:1
Delays 0ms
Mix source post-EQ
Sends to Mixes -Inf and pre-fade
Sends to FX -Inf and post-fade
Direct Out post-fade/mute, trim 0dB
Mutes off
Channel faders -Inf
FX return faders 0dB
FX send and Mix master faders -4dB
LR master fader -Inf
FX = Mix>Return
Qu-16 FX = EMT250, Delay
Qu-24, 32 = EMT250, Hall480, Dly, ADT
Group mode selected (not Qu-16)
Audio Groups unassigned (not Qu-16)
Group and Matrix faders –Inf (not Qu-16)
Matrix sends assigned, post (not Qu-16)
Mute/DCA Groups unassigned
DCA Group masters = ‘0dB’
AES, Alt Out patch LR post-fade
Qu-Drive stereo patch LR post-fade
USB patch default with 17-18 = LR
USB CH/ST/Grp source = Insert Sends
Talkback unassigned, HPF 120Hz
Custom Strip unassigned
SoftKeys = Mute Groups 1-4
Channel names cleared
AMM In, all CH Off
Ducker unassigned
Qu Mixer Reference Guide
Touch and hold the Reset Mix Settings button for 1
second until the confirmation screen appears. Touch
Yes to reset the mixer or No to exit without resetting.
This ‘resets the board’ ready for mixing:

All preamps are patched and have nominal mic
gain set and phantom power switched off, a good
start for vocal microphones,

All EQ is switched in and set flat ready to start
adjusting tone,

Gates and compressors are switched out but have
their parameters set ready for being switched in
for applications such as drum gating and vocal
compression,

Channels are assigned to the mixes and FX with
their faders and send levels turned down ready to
start dialling into the mix,

The mixes are set pre-fade and sourced post-EQ,
pre-compressor ready to be used as monitor
sends, a common application for the mixes.

The FX master and return faders are turned up
and default reverbs and delay patched ready for
you to hear the effects as soon as you raise a
channel send.

The Mix master faders are turned up ready to hear
sound when you raise a channel send. The main
LR master is turned down to avoid unexpected
loud level in the PA.

The Groups are unassigned and their master
faders turned down (not Qu-16).

The Matrix sends are assigned and their master
faders turned down (not Qu-16).
Creating your own start settings – You
can start by resetting the mixer and then editing the
patching, levels and parameters to suit your starting
preferences. Name and store this as a Scene, for
example Scene 1 “Reset Board”.
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AP9372 iss.9
15.2
System Hard Reset
A power up reset is available if you need to fully reset
the Qu mixer settings and memories. This could be
done to clear the system out before sending the mixer
to a client, or if you suspect a system problem.
To reset mix parameters before starting a show or
sound check, use a Scene or the Reset Mix Settings
function described earlier in this guide.
 A hard reset clears all current settings, all Scenes,
User Libraries and User Permissions.
Hold for 5 seconds
while powering up
the mixer
System hard reset:














‘Reset Mix Settings’ default as above
Input PAFL = PFL, mix = AFL
PAFL additive mode off
Sel follow PAFL on, LR to PAFL on
PAFL trim 0dB, delay 0ms
Talkback mic gain 27dB
Sig Gen Pink Noise, unassigned
Clears all scene Safes
Clears all Scene memories
Clears all Scene Filters
Clears all User Libraries
Resets all User Permissions
Resets Network address to DHCP
Resets touch screen calibration
Qu Mixer Reference Guide
First turn off the system including amplifiers and
powered speakers.
To hard reset the Qu mixer - Press and hold the
touch screen Reset and Setup keys together and then
power up the mixer. Keep the keys pressed for at least
5 seconds while the mixer boots. Release the keys.
The hard reset:

Resets the current settings the same as using the
Scenes screen ‘Reset Mix Settings’ button.

Resets non-scene parameters and user
preferences to a factory default.

Clears scene recall Safes and Filters.

Clears all memories including Scenes, User
Libraries and User Permissions.

Resets the Network IP address and the touch
screen calibration.
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16.Specifications
16.1
Installing Qu-16, Qu-24, Qu-32
The following provides information for mixer installation. The Qu mixer can be operated on a flat surface
or fitted into a flightcase. The Qu-16 can be mounted in a 19” equipment rack or plinth.
Ventilation - Make sure that air flow around the
ventilation slots at the rear and underside of the mixer
is not obstructed. Keep these areas clear when flight
casing, installing or operating the mixer.
 Blocking or obstructing the ventilation slots may
cause damage to the mixer through overheating.
Qu-16 = 440
Qu-24 = 632
440
Qu-32 = 850mm
27
30
186
20 degrees
70
471
62
134
133
190
43
171
40
496
43
Qu-16 Rack Mount Option
A kit of parts is available from Allen &
Heath to mount the Qu-16 in a
standard 19” equipment case.
Rack kit part number QU-16-RK19
Minimum rack space required is 11U.
486
 Allow space for the connectors
and cables at the rear.
The rack ears can be fitted without
the need to remove the plastic side
trims. Simply secure them to the base
of the mixer with the 6x M4x8 screws
supplied (part number AB0332) using
a T20 Torx screwdriver.
Secure the mixer in the 19” rack with
8x M6 screws with plastic cup
washers to protect the mixer surface.
483
Qu Mixer Reference Guide
85
AP9372 iss.9
16.2
Installing Qu-Pac
Free Standing - For operating while on a
desk, shelf or other flat surface.
Make sure the 4 rubber feet are fitted.
Allow space at the sides and rear for ventilation.
The mixer can be transported in a purpose
designed padded bag or flight case.
Optional polyester Qu-Pac padded carry bag
AP9931 is available from Allen & Heath.
Rubber feet
Rack Cased - For operating while fitted into a
4U space in a standard 19” equipment rack or
flight case.
Choosing a ‘shallow’ case with internal depth of
200mm (8”) or more to allow easy access to the
rear connectors.
The mixer front panel is angled upwards to allow
easier access to the controls while in the rack.
Qu-Pac is shipped with a rack ear kit to convert
from free standing to rack operation. To fit the
rack ears:
Secure Qu-Pac into the
rack using 2x M6x16
screws (AB0344) and
plastic cups (AB0345)
per side.
Fit the ears to the
case using 2x
M4x8 screws per
side.
If necessary, remove the 4x rubber feet by
prizing the central plastic grommet out
using a small flat bladed screwdriver.
 Allow adequate air flow around the ventilation slots at the rear and through the inside section of the
case. Do not block the sides.
Dimensions - Shown in millimetres (inches)
122 (4.8")
Angle
17 degrees
181 (7.13")
177 (6.97") 4U Rack Space
440 (17.32") Free Standing
174 (6.85")
274 (10.8") to allow for connections
Qu Mixer Reference Guide
86
AP9372 iss.9
16.3
Installing Qu-SB
Free Standing - For operating while on a
desk, shelf or other flat surface.
Make sure the 4 rubber feet are fitted.
Allow space at the sides and rear for ventilation.
The mixer can be transported in a purpose
designed padded bag or flight case.
Rack Cased - For operating while fitted into a
Rubber feet
4U space in a standard 19” equipment rack or
flight case.
The optional kit QU-SB-RK19 is required to
convert from free standing to rack operation. To
fit the rack ears:
Fit the rack ears
(AA10262) to the mixer
using the 2x M4x8
(AB0332) screws per
side. Use a Torx T20
driver.
Secure Qu-SB into the rack
using the 2x M6x16 screws
(AB10301) and washers
(AB0345).
The rubber feet do not need to be
removed. If you do wish to remove them
then unscrew using a Torx T20 driver.
 Allow adequate air flow around the ventilation slots at the rear and through the inside section of the
case. Do not block the sides.
Dimensions - Shown in millimetres (inches)
483 (19") Rack Mounted
Angle
17 degrees
21
162 (7.13")
177 (6.97") 4U Rack Space
Angle
21 degrees
162 (6.38")
123
Rack Mounted
436 (17.32") Free Standing
38
Qu Mixer Reference Guide
87
161 (6.34") Free Standing
AP9372 iss.9
Qu Mixer Reference Guide
88
USB
dSNAKE
ADC
ADC
ADC
ADC
+
-
+
-
ADC
ADC
Gain
ADC
+
-
+
-
+
-
48V
LOCAL
Stream
Stereo
or
Multitrack
Mic/Line Inputs 1-24
AR2412
-20dB PAD
+
-
ADC
GAIN
Patch any socket to any channel
48V
Mic/Line Inputs 1-8
CH1-16
ST1-3
FX Ret1-4 pre
Mix1-10 post
LR pre/post
L+R pre/post
PAFL
AR84
1-24
1-18
17-18
or
XLR Out 1-12
XLR Out 1-4
XLR Out 1-8
Mix1-10 post
LR pre/post
L+R pre/post
PAFL
dSNAKE XLR Out Patch:
BAL
+
Ready
+4dBu
+
-
Gain
dSNAKE
dSNAKE
dSNAKE
Mix>Return
FX 1-4
Insert
CH>Return
Mix>Return
Inserted
FX
Talkback Mic
Direct Out
PFL
AFL
Global source per Mix
MUTE
HPF
dSNAKE Main
MUTE
Post
Pre
LEV
R
R
PAN
R
R
Mix sends
FX sends
Mix
LR
Mix
LR
To ME Personal Mix System
MONITOR Patch 1-40:
dSNAKE Expander
(ME compatible)
Inputs ST1-3
XLR Out 13+
to LR
PFL
AFL
Direct Out
Mix sends
FX sends
ASSIGN to
CH1-16 Dir Out
ST1-3 Dir Out
FX Ret1-4 pre
Mix1-10 post
LR pre/post
L+R pre/post
PAFL
PFL
AFL
to LR
ASSIGN to
SEND
L
L
TRIM
SEND
L
PAN
Press to TALK
Inputs ST1-3
XLR Out 9+
(ME compatible)
Sine
White Noise
Pink Noise
B/P Noise
MONITOR
FADER
TALKBACK
MUTE
FX Return 1-4
SIG GEN
EXPANDER
PEQ
METER
Follow Fader
Post
Pre
L
AMM gain element
FADER
Control
Out
Global Follow Mute
EXPANDER
ADC
48V
Global source for Direct Out
Post-All
DELAY
METER
multi-point Pk
AMM (Auto Mic Mixer)
Available for CH1-16
COMP
Inputs
Post-PEQ
PEQ
Preamp Pre-EQ
GATE
Patch any output to any socket
DAC
MUTE
METER
Ducker
Ducker
Insert
FADER
FX Send1-2
USB Patch 1-24:
Mic/Line Inputs 1-16
Stream
Stereo
or
Multitrack
Inserted
FX
HPF
Ducker Trigger
To USB (Insert Sends)
To USB (Direct Outs)
To dSNAKE Monitor patch
CH1-16, ST1-3 Source
Insert
Sends
Direct Out
AB168
USB B
Qu-Drive
RECORD
Outputs
Inputs
CH1-32 Dir Out
ST1-3 Dir Out
Grp1-8 post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
0
FX
Insert
Input Channels 1-16, ST1-3
TRIM POL
Ducker Trigger source:
Local/dSNAKE
USB
SOURCE
Firmware V1.8
SYSTEM BLOCK DIAGRAM
PLAYBACK
AudioRack options:
Global
USB source
CAT5 'digital snake'
ST3
R
ST2
L/M
R
ST1
L/M
Line In
Mic In
Mic/Line 1-16
Qu-16
FX Mix
LR PAFL
GEQ
COMP
DELAY
GEQ
GEQ
28-band
RTA / Spectrogram
31-band 1/3 octave
PEQ
L, R Masters
PEQ
28-band
Monitor
DELAY
DELAY
-24dB
0dB
PAFL PFL TRIM
COMP
COMP
Mix 5-6, 7-8, 9-10 Masters
PEQ
28-band
Mix 1-4 Masters
DELAY
Insert
FX
Insert
FX
Insert
FX
AFL
PFL
MUTE
MUTE
MUTE
METER
METER
METER
DAC
DAC
Phones
PAFL
Pre
L+R to Output Patch
FADER
FADER
FADER
L
L
BAL
BAL
R
PFL
R
PFL
PFL
Patch:
LR pre/post
L+R pre/post
Mix post
PAFL
Patch:
LR pre/post
L+R pre/post
Mix post
PAFL
post
L+R
post
AFL
post
AFL
post
AFL
BAL +4dBu
+
-
+
-
R
L
R
L
R
L
AES Out
R
L
Alt Out
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
AES digital out
DAC
DAC
2TRK Out
DAC
DAC
LR Out
DAC
DAC
Mix Out 5-6, 7-8, 9-10
DAC
Mix Out 1-4
16.4
Qu-16 System Block Diagram
AP9372 iss.9
Qu Mixer Reference Guide
89
USB
dSNAKE
ADC
ADC
ADC
ADC
+
-
+
-
ADC
ADC
Gain
ADC
+
-
+
-
+
-
48V
Mic/Line Inputs 1-24
AR2412
-20dB PAD
+
-
ADC
GAIN
Patch any socket to any channel
48V
Mic/Line Inputs 1-8
1-32
1-18
CH1-24(32)
ST1-3
Grp1-4(8)
FX Ret1-4 pre
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
AR84
Stream
MUTE
METER
FADER
FX Send1-4
USB Patch 1-32:
Mic/Line Inputs 1-16
USB B
17-18
or
Ducker
Insert
Ducker
Ducker Trigger
To USB (Insert Sends)
To USB (Direct Outs)
To dSNAKE Monitor patch
Inserted
FX
HPF
Talkback Mic
Grp1-4(8) post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
DAC
BAL
+
Ready
+4dBu
Patch any output to any socket
XLR Out 1-12
XLR Out 1-4
+
-
Gain
dSNAKE
dSNAKE
dSNAKE
Mix>Return
FX 1-4
Insert
CH>Return
Mix>Return
Inserted
FX
dSNAKE XLR Out Patch:
PFL
AFL
Direct Out
MUTE
FADER
HPF
MONITOR
dSNAKE Main
LEV
PAN
R
R
Mix sends
FX sends
ASSIGN to
Grp
Mix
LR
MTX
CH1-24(32) Dir Out
ST1-3 Dir Out
FX Ret1-4 pre
Grp1-4(8) post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
dSNAKE Expander
(ME compatible)
Inputs 25+
XLR Out 13+
to LR
PFL
AFL
to Grp
Direct Out
Mix sends
FX sends
to LR
ASSIGN to
Grp
Mix
LR
MTX
SEND
L
L
TRIM
PFL
AFL
to Grp
To ME Personal Mix System
MONITOR Patch 1-40:
Inputs 17+
XLR Out 9+
(ME compatible)
MUTE
Sine
White Noise
Pink Noise
Bpass Noise
Post
Pre
R
R
SEND
L
Press to TALK
TALKBACK
MUTE
FX Return 1-4
SIG GEN
EXPANDER
PEQ
METER
Follow Fader
Post
Pre
L
PAN
AMM gain element
FADER
Control
Out
Global Follow Mute
EXPANDER
ADC
48V
Global source for Direct Out
Global source per Mix
Post-All
DELAY
METER
multi-point Pk
AMM (Auto Mic Mixer)
Available for CH1-16
COMP
Inputs
Post-PEQ
PEQ
Preamp Pre-EQ
GATE
XLR Out 1-8
CH1-24(32), ST1-3, Group Source
Insert
Sends
AB168
AudioRack options:
Stream
Stereo
or
Multitrack
Stereo
or
Multitrack
RECORD
Outputs
Inputs
Direct Out
CH1-32 Dir Out
ST1-3 Dir Out
Grp1-8 post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
0
TRIM POL
FX
Insert
Input Channels 1-24(32), ST1-3
Ducker Trigger source:
Local/dSNAKE
USB
SOURCE
Firmware V1.8
SYSTEM BLOCK DIAGRAM
Qu-Drive
PLAYBACK
CAT5
Global
USB source
ST3
R
ST2
L/M
R
ST1
L/M
Line In
Mic In
Mic/Line 1-24(32) LOCAL
Qu-24(32)
FX Mix Grp LR PAFL
GEQ
COMP
GEQ
COMP
GEQ
DELAY
GEQ
28-band
COMP
COMP
DELAY
DELAY
PEQ
GEQ
28-band
RTA / Spectrogram
31-band 1/3 octave
Insert
FX
0dB
PAFL PFL TRIM
-24dB
MUTE
MUTE
MUTE
AFL
PFL
DELAY
Monitor
COMP
Matrix 1-2, 3-4 Masters
PEQ
L, R Masters
PEQ
28-band
MUTE
GROUP MODE
Mix 5-6, 7-8, 9-10 Masters
PEQ
28-band
Mix 1-4 Masters
DELAY
Insert
FX
Insert
FX
Insert
FX
DELAY
Groups can be used to provide extra stereo mixes
PEQ
Group (routing, stereo sub-groups)
Mix (stereo sends)
Ducker
or FX
Insert
28-band
Group 1-2, 3-4, (5-6, 7-8) Masters
Post
Pre
R
L
DAC
DAC
MUTE
R
PFL
L
BAL
R
PFL
METER
L
BAL
R
PFL
R MTX sends
Phones
PAFL
FADER
PFL
R MTX sends
SEND
L
L
BAL
post
AFL
BAL +4dBu
+
-
DAC
DAC
LR Out
DAC
DAC
+
-
R
L
R
L
R
L
AES Out
R
L
R
L
R
L
Alt Out
BAL +4dBu
+
-
AES digital out
DAC
DAC
BAL +4dBu
DAC
+
-
+
DAC
Mtx Out 1-2, 3-4
+
-
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
Mix Out 5-6, 7-8, 9-10
DAC
2TRK Out
MTX1-4 post
LR pre/post
L+R pre/post
Mix1-10 post
Grp1-4(8) post
PAFL
+
-
BAL +4dBu
+
-
Mix Out 1-4
DAC
DAC
Grp Out 1-2, 3-4, (5-6, 7-8)
Patch:
MTX1-4 post
LR pre/post
L+R pre/post
Mix1-10 post
Grp1-4(8) post
PAFL
post
AFL
L+R
post
AFL
post
AFL
post
AFL
Mix sends
FX sends
MTX sends
R
PFL
R MTX sends
to LR
L
Direct Out
BAL
R
SEND
METER
Post
Pre
PAN
SEND
L
METER
Post
Pre
METER
Post
Pre
L
L
METER
SEND
L+R to Output Patch
FADER
FADER
FADER
FADER
MTX
16.5
Qu-24 and Qu-32 System Block Diagram
AP9372 iss.9
Qu Mixer Reference Guide
90
USB
dSNAKE
ADC
ADC
ADC
ADC
+
-
+
-
ADC
ADC
Gain
ADC
48V
+
-
+
-
+
-
-20dB PAD
+
-
ADC
GAIN
Patch any socket to any channel
48V
Mic/Line Inputs 1-24
AR2412
CH1-32
ST1-3
Grp1-8
FX Ret1-4 pre
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
Mic/Line Inputs 1-8
1-32
1-18
MUTE
METER
Talkback Mic
Grp1-8 post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
DAC
BAL
+
Ready
+4dBu
Patch any output to any socket
XLR Out 1-12
XLR Out 1-4
+
-
Gain
dSNAKE
dSNAKE
dSNAKE
Mix>Return
FX 1-4
Insert
CH>Return
Mix>Return
Inserted
FX
dSNAKE XLR Out Patch:
PFL
AFL
Direct Out
MUTE
FADER
HPF
MONITOR
dSNAKE Main
LEV
R
R
Mix sends
FX sends
to LR
PFL
AFL
to Grp
Direct Out
ASSIGN to
Grp
Mix
LR
MTX
ASSIGN to
Grp
Mix
LR
MTX
SEND
L
to LR
dSNAKE Expander
(ME compatible)
Inputs 25+
XLR Out 13+
CH1-32 Dir Out
ST1-3 Dir Out
FX Ret1-4 pre
Grp1-8 post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
To ME Personal Mix System
MONITOR Patch 1-40:
Inputs 17+
XLR Out 9+
(ME compatible)
MUTE
Sine
White Noise
Pink Noise
Bpass Noise
Post
Pre
PAN
TRIM
L
PFL
AFL
to Grp
Mix sends
R FX sends
R
SEND
PAN
Press to TALK
TALKBACK
MUTE
FX Return 1-4
SIG GEN
EXPANDER
PEQ
METER
Follow Fader
Post
Pre
L
L
AMM gain element
FADER
Control
Out
Global Follow Mute
EXPANDER
ADC
48V
Global source for Direct Out
Global source per Mix
Post-All
DELAY
METER
multi-point Pk
AMM (Auto Mic Mixer)
Available for CH1-16
COMP
Inputs
Post-PEQ
PEQ
Preamp Pre-EQ
GATE
XLR Out 1-8
FADER
FX Send1-4
USB Patch 1-32:
AR84
Stream
or
Ducker
Insert
Ducker
Ducker Trigger
To USB (Insert Sends)
To USB (Direct Outs)
To dSNAKE Monitor patch
Inserted
FX
HPF
CH1-32, ST1-3, Group Source
Mic/Line Inputs 1-16
USB B
17-18
Insert
Sends
Direct Out
CH1-32 Dir Out
ST1-3 Dir Out
Grp1-8 post
Mix1-10 post
LR pre/post
L+R pre/post
MTX1-4 post
PAFL
Ducker Trigger source:
0
FX
Insert
Input Channels 1-32, ST1-3
TRIM POL
AB168
AudioRack options:
Stream
Stereo
or
Multitrack
Stereo
or
Multitrack
RECORD
Outputs
Inputs
Qu-Drive
PLAYBACK
CAT5
Global
USB source
ST3
R
ST2
L/M
R
ST1
L/M
Line In
Mic In
Local/dSNAKE
USB
SOURCE
Firmware V1.8
SYSTEM BLOCK DIAGRAM
LOCAL
Access inputs for 17-32 via dSNAKE
(Default = dSNAKE 1-16)
Mic/Line 1-16
Qu-Pac
FX Mix Grp LR PAFL
GEQ
COMP
GEQ
COMP
GEQ
DELAY
GEQ
28-band
COMP
COMP
DELAY
DELAY
PEQ
GEQ
28-band
RTA / Spectrogram
31-band 1/3 octave
Insert
FX
0dB
PAFL PFL TRIM
-24dB
MUTE
MUTE
MUTE
AFL
PFL
DELAY
Monitor
COMP
Matrix 1-2, 3-4 Masters
PEQ
L, R Masters
PEQ
28-band
MUTE
GROUP MODE
Mix 5-6, 7-8, 9-10 Masters
PEQ
28-band
Mix 1-4 Masters
DELAY
Insert
FX
Insert
FX
Insert
FX
DELAY
Groups can be used to provide extra stereo mixes
PEQ
Group (routing, stereo sub-groups)
Mix (stereo sends)
Ducker
or FX
Insert
28-band
Group 1-2, 3-4, 5-6, 7-8 Masters
Post
Pre
L
DAC
DAC
MUTE
R
PFL
L
BAL
R
PFL
METER
L
BAL
R
PFL
R MTX sends
Phones
PAFL
FADER
PFL
R MTX sends
L
BAL
post
AFL
MTX1-4 post
LR pre/post
L+R pre/post
Mix1-10 post
Grp1-8 post
PAFL
Patch:
MTX1-4 post
LR pre/post
L+R pre/post
Mix1-10 post
Grp1-8 post
PAFL
post
AFL
L+R
post
AFL
post
AFL
post
AFL
Mix sends
FX sends
MTX sends
R
PFL
R MTX sends
SEND
L
METER
Post
Pre
R
to LR
L
Direct Out
BAL
R
SEND
L
METER
Post
Pre
PAN
SEND
L
METER
Post
Pre
L
METER
SEND
L+R to Output Patch
FADER
FADER
FADER
FADER
MTX
BAL +4dBu
+
-
+
-
R
L
R
L
R
L
AES Out
R
L
Alt Out
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
+
-
BAL +4dBu
+
-
AES digital out
DAC
DAC
2TRK Out
DAC
DAC
LR Out
DAC
DAC
Mix Out 5-6, 7-8, 9-10
DAC
Mix Out 1-4
16.6
Qu-Pac System Block Diagram
AP9372 iss.9
16.7
Qu-SB System Block Diagram
Qu Mixer Reference Guide
91
AP9372 iss.9
16.8
Inputs
System Specifications
Mic/Line Inputs
Balanced, XLR and 1/4" TRS jack, fully recallable
Faders Qu-16, 24, 32
100mm motorised
Input Sensitivity (XLR / TRS)
-60 to +5dBu / -50 to +15dBu
Touch Screen Qu-16, 24, Pac
5" TFT, 800x480 resolution
Analogue Gain
-5 to +60dB, 1dB steps
Touch Screen Qu-32
7" TFT, 800x480 resolution
Maximum Input Level (XLR / TRS)
+19dBu / +29dBu
SoftKeys
4 (Qu-16), 10 (Qu-24, 32), 15 (Qu-Pac)
Input Impedance (XLR / TRS)
>5kΩ / >10 kΩ
Mute Groups / DCA Groups
4/4
THD+N, Unity gain 0dB
0.0005% -89 dBu (20-20kHz, Direct Out @0dBu 1kHz)
Network
TCP/IP Ethernet for MIDI and iOS apps
THD+N, Mid gain +30dB
0.001% -83dBu (20-20kHz, Direct Out @0dBu 1kHz)
Phantom Power
+48V
Control
Input
Processing
Stereo Line Inputs
Outputs
dSNAKE
Local, dSNAKE, or USB
ST3
Local, dSNAKE, or USB Stereo
USB Global Source
Qu-Drive or USB B Streaming
Balanced, 1/4" TRS jack, half normalled
ST3 connector (not Qu-SB)
Unbalanced, stereo 3.5mm Mini Jack
Input Sensitivity (ST1, ST2 / ST3)
Nominal +4dBu / 0dBu
Stereo Linking
Odd/even input pairs
Trim
+/-24dB
Parameters linked
EQ, dynamics, insert, delay, assignments, sends, Ducker
Maximum Input Level (ST1,ST2 / ST3)
+22dBu / +18dBu
Link options
Preamp, polarity, sidechains, fader/mute, pan
Input Impedance
>7kΩ
Polarity
Normal/Reverse
Mix1-10 and LR Out
Balanced, XLR
High Pass Filter
12dB/octave 20Hz – 2kHz
Group and Matrix Out (not Qu-16)
(1/4" TRS Matrix Out on Qu-SB)
Insert
FX or Ducker
Output Impedance
<75Ω
Delay
Up to 85ms
Nominal Output
+4dBu = 0dB meter reading
Maximum Output Level
+22dBu
Gate
Self key Sidechain
Residual Output Noise
-90 dBu (muted, 20-20kHz)
Threshold / Depth
-72dBu to +18dBu / 0 to 60dB
Attack / Hold / Release
50us to 300ms / 10ms to 5s / 10ms to 1s
Stereo Alt Out & 2Trk Out (not Qu-SB)
Balanced, 1/4" TRS jack
Source (Alt Output / 2Trk Output)
Patchable / LR post-fade
PEQ
4-Band fully parametric, 20-20kHz, +/-15dB
Output Impedance
<75Ω
Band 1, Band 4
Selectable Shelving (Baxandall), Bell
Nominal Output
+4dBu = 0dB meter reading
Band 2, Band 3
Bell
Maximum Output Level
+22dBu
Bell Width
Non-constant Q, variable, 1.5 to 1/9th octave
Residual Output Noise
-90 dBu (muted, 20-20kHz)
Compressor
Self key Sidechain
AES Digital Output (not Qu-SB)
2 channel, 48kHz sampling rate, XLR
Threshold / Ratio
-46dBu to 18dBu / 1:1 to infinity
2.5Vpp balanced terminated 110Ω
Attack / Release
300us – 300ms / 100ms - 2s
Knee
Soft/Hard
Types
Peak Manual, RMS Manual, SlowOpto, PunchBag
Compatible with AudioRacks AR2412, AR84, AB168
Channel Direct Out to USB
Follow Fader, follow Mute (global options)
Compatible with ME personal mixing system
Source select (global)
Post-Preamp, Pre-EQ, Post-EQ, Post-Delay
Insert
Assign FX into Mix channels
Delay
Up to 170ms
GEQ
Constant 1/3 oct, 28 bands 31Hz-16kHz, +/-12dB Gain
PEQ
As Input PEQ
Compressor
As Input Compressor
Available on
CH1-16
Mode
Gain Sharing
Inputs
Patchable to CH1-32, ST1, ST2, ST3
Outputs
Patchable from Mix1-10, LR, Grp1-8, MTX1-4
Measured balanced XLR in to XLR out, 0dB gain, 0dBu input
Dynamic Range
112 dB
Frequency Response
+0/-0.5dB 20Hz to 20kHz
Headroom
+18dB
Internal operating Level
0dBu
dBFS Alignment
+18dBu = 0dBFS (+22dBu at XLR output)
Meter Calibration
0dB meter = -18dBFS (+4dBu at XLR out)
Meter Peak indication
-3dBFS (+19dBu at XLR out), multi-point sensing
Meter Signal indication
-48dBFS (-26dBu at XLR out)
Meter Type
Fast (peak) response
Mix
Processing
AMM
Sampling Rate
48kHz +/-100PPM
Sidechain Filter HPF / LPF
12dB/octave 20Hz – 2kHz / 120Hz - 20kHz
ADC, DAC
24-bit Delta-Sigma
Priority
-15dB to +15dB per channel
Latency
1.2 ms (local XLR in to XLR out)
Available on
CH1-32, ST1-3, Group
Trigger Source
Selectable from any Input or Output
Ducker
0.7 ms (local XLR in to AES out)
Operating Temperature Range
0 deg C to 35 deg C (32 deg F to 95 deg F)
Mode
Single or Ganged
Mains Power
100-240V AC, 50/60Hz
Threshold / Depth
-72dBu to +18dBu / 0 to 60dB
Attack / Hold / Release
Fast, Medium, Slow
Internal FX
4x RackFX engine, Send>Return or Inserted
Types
Reverbs, Delays, Gated Reverb, ADT
Max Power Consumption Qu-16/24/32/Pac/SB 82W/120W/150W/55W/49W
Qu-Drive
USB A
Stereo Record
2 channel, WAV, 48kHz, 24-bit, patchable
Stereo Playback
2 channel, WAV, 44.1 or 48kHz, 16 or 24-bit, to ST3
Multitrack Record
18 channel, WAV, 48kHz, 24-bit, patchable
Multitrack Playback
18 channel, WAV, 48kHz, 24-bit
USB Audio Streaming
USB B, Core Audio compliant
Send (upstream) Qu-16/24/32/Pac/SB
FX
Chorus, Symphonic Chorus, Phaser, Flanger
4 dedicated Stereo FX returns
Fader, Pan, Mute, Routing to Mix/LR, 4-Band PEQ
PAFL
PFL or stereo in-place AFL, 0 to -24dB Trim, 85ms Delay
Talkback
Assignable to any mix, Gain, 48V, 12dB/oct HPF
24/32/32/32/32 channel, WAV, 48kHz, 24-bit
Signal Generator
Assignable to any mix, Sine / White/Pink/Bandpass Noise
Return (downstream) Qu-16/24/32/Pac/SB
22/30/32/32/32 channel, WAV, 48kHz, 24-bit
RTA
31-Bands 1/3 octave 20-20kHz, follows PAFL source
Qu-16
Width x Depth x Height
Qu-32
Width x Depth x Height
Desk mounted
440 x 500 x 186 mm (17.4" x 19.7" x 7.4")
Desk mounted
850 x 500 x 186 mm (33.5"" x 19.7" x 7.4")
Rack mounted
483 x 472 x 190 mm (19" x 18.6" x 7.5")
Packed in shipping box
1000 x 680 x 350 mm (39.4" x 26.8" x 13.8")
Packed in shipping box
610 x 680 x 350 mm (24" x 27" x 13.8")
Unpacked weight
20 kg (44 lbs)
Unpacked weight
10 kg (22 lbs)
Packed weight
24 kg (53 lbs)
Packed weight
13.5 kg (30 lbs)
Qu-Pac
Width x Depth x Height
Qu-24
Width x Depth x Height
Desk mounted
440 x 174 x 181 mm (17.4" x 6.9" x 7.1")
Desk mounted
632 x 500 x 186 mm (24.9" x 19.7" x 7.4")
Rack mounted
483 x 174 x 177 mm (19" x 6.9" x 7") 4U
Packed in shipping box
670 x 790 x 350 mm (26.4" x 31.1" x 13.8")
Packed in shipping box
620 x 310 x 310 mm (24.4" x 12.2" x 12.2")
Unpacked weight
14 kg (31 lbs)
Unpacked weight
6.6 kg (14.5 lbs)
Packed weight
18 kg (40 lbs)
Packed weight
8.5 kg (18.7 lbs)
Qu-SB
Width x Depth x Height
Desk mounted / stagebox use
435 x 174 x 162 mm (17.2" x 6.9" x 6.4")
Packed in shipping box
550 x 270 x 270 mm (21.7" x 10.6" x 10.6")
Unpacked weight
4.5 kg (9.9 lbs)
Packed weight
5.7 kg (12.7 lbs)
Audio Tools
Dimensions
& Weights
CH1-32, ST1, ST2
ST1, ST2 connector
System
USB Audio
Source
Qu Mixer Reference Guide
Dimensions
& Weights
92
AP9372 iss.9