ALLEN & HEATH | Qu-24 | Allen & Heath QU24 24 Channel Digital Desk Spec Sheet

Technical Specifications
the shape of things to come
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ALLEN&HEATH
Introducing the New Compact
Digital Mixers from Allen & Heath
We have been creating high end mixing consoles for
some of the most discerning ears in the business since
1969. We’re not a software house, we don’t make stomp
boxes or cable testers – creating excellent mixers is, has
been and always will be our great passion. Qu-16 and
Qu-24 have been designed by our in-house research and
development team in Cornwall, Great Britain, and are
directly descended from the GLD and iLive digital mixing
systems that have earned the industry’s respect night
after night on tour and in live venues across the globe –
so you can be confident that you’re standing behind a
premium mixer that looks, feels, and sounds like a pro.
Qu-16 and Qu-24 harness the full potential of digital
mixing technology, with total recall of settings (including
the all-important fader position and preamp gain),
convenient recording and playback solutions, iPad
control, personal monitoring options and the choice of
local or remote Cat5 I/O.
AnalogiQTM Preamps
Our AnalogiQTM total recall preamps feature zero crossing
detection and an advanced padless 1dB step gain stage,
closely allied to the DSP for optimal gain accuracy and
audio transparency. The analogue signal is captured by
high class, low latency 24bit analogue to digital converters
matched to high quality 24bit digital to analogue
converters to deliver the required outputs. The AnalogiQTM
design has been refined to offer superb transparency,
minimal distortion and an ultra-low noise floor, with a warm,
musical sound that is missing from some digital consoles.
The Mixing Experience
Having massive processing power and advanced
functionality is great, but it counts for nothing if you can’t
access the controls you need in a heartbeat. Once you start
using a Qu you’ll sense the years of research into
ergonomics and the hands-on mixing experience that our
team has drawn upon to deliver a wonderfully natural layout
and workflow. It’s not about recreating an analogue
interface, it’s about creating an experience that’s fluid,
comfortable and intuitive for novices, digital natives and old
school road warriors alike, making all the benefits of digital
mixing technology readily accessible to all.
Touch Control
Total Recall
The 800 x 480, sixteen million colour Touchscreen and its
dedicated data encoder form the heart of the Qu interface,
providing super-fast, easy access to all settings. The
user-friendly interface has been designed with clarity in mind.
Dedicated keys and screen tabs quickly guide you to meter
and RTA views, FX racks, channel processing, USB audio
control, scenes, setup menus and much more.
True digital mixing is about being able to save and recall
scenes (snapshots) at the press of a button. Qu-16 and
Qu-24 can store up to 100 full Scenes for recall at will.
Channels and mixes can be made Safe from Scene recall.
For example, if an instrument or mic gets swapped out after
the soundcheck, the channel can be made safe to avoid
settings being overridden by Scene recalls. Or if a
broadcast feed or walk-in iPod is added last-minute before
the show kicks off, that mix or channel can be made safe
from any scene change. In addition, single parameter
updates can be blocked using a Recall Filter. So if you
tweak the graphic EQ to reflect the room response when
the audience gets in, you can block this to prevent any
overwriting at scene change.
Fader Automation
Moving faders started as an expensive option in the studio
desks of the 80s, and later became the norm with the advent
of digital technology. Nevertheless some entry-level digital
mixers lack this precious commodity which is a fundamental
part of the Total Recall approach. Fader automation is
essential for rapid mixing, especially when you’re dealing
with multiple monitor mixes – just press a mix key and the
faders immediately fly to the send levels for that mix.
The SuperStrip
All your key processing tools are presented in a clean layout
on the SuperStrip, with 1 function per physical control. The
SuperStrip is complemented by an onscreen Touch Channel
for intuitive access to full processing parameters without
clutter or complex menu structures. Processing for Mono and
Stereo inputs includes trim, polarity, HPF, gate, insert, 4 band
PEQ, compressor and delay. All mixes including LR provide
Insert, 4 band PEQ,
PE 1/3 octave GEQ, compressor and delay.
Qu-16 and Qu-24 feature 16 and 24 motorized ALPS faders
respectively, arranged over 2 layers, allowing instant access
to all channels and masters in a compact space, plus a
dedicated master fader which dynamically follows the mix
selection. A third, Custom layer is available for ad-hoc user
strip layout, where any combination of Inputs, FX Sends, FX
Returns, Mix masters and MIDI strips can be assigned.
Custom settings for each EQ, compressor or channel can
be saved as Library presets. This lets you store your tried
and tested setting for your favourite vocal mic or reverb
pattern and apply it to other channels or shows. Libraries,
Scenes and the complete Show configuration can be
saved to a USB key, so you can carry the show with you,
ready to use on another Qu mixer.
Qu-Drive
Forget soundcard drivers and software setup, Qu-16 and
Qu-24 have an integrated multitrack USB recorder, providing 18 channels of 48kHz, 24bit recording and playback
straight to / from your USB hard drive. Capturing multitrack
recordings of your shows has never been so easy. Mixes
and FX returns can be recorded alongside channels, and
multitrack audio can be played back to the mixer for virtual
sound-check applications.
iLive FX
Qu’s dynamics and FX algorithms are derived from the FX
used in our iLive pro touring series. Some of the world’s most
respected audio engineers have chosen to use iLive’s FX on
tour in preference to top-end plug-ins and external FX units.
All Qu models boast 4 stereo iLive FX engines, featuring
lovingly crafted emulations of legendary classic reverbs,
gated reverbs, delays, modulators, flangers and more. The
FX library has the ability to grow with future firmware
releases. FX are returned to the mix on dedicated return
channels, so you’re not tying up your mono and stereo input
channels. Each Stereo FX Return has a dedicated 4 band
PEQ.
An independent set of controls is provided for quick stereo
recording of the main LR or other mix outputs, and a 2track USB return can be routed to ST3 for playback of
stereo WAV files such as walk-in music.
USB Audio Streaming
Qu’s built-in interface streams multitrack audio to your Mac
via a flexible patching system: all Input channels and the
Main LR can be recorded at the same time, or you may
choose to record something different such as FX returns or
a pair of mixes.
The returns from the Mac can be assigned to the Input
channels. The interface is class-compliant on Mac OS X –
which means it’s truly plug ‘n play, with no need to install a
driver. It will be recognized straightaway by any DAW
supporting Core Audio, including Logic, Cubase, Reaper,
and Pro Tools.
The Custom layer can be populated with MIDI strips for
direct assignment or ‘learning’ of faders and Mute, Sel and
PAFL keys in the DAW. Users can also download the free
DAW Control app for Mac OS X, which translates the MIDI
messages to popular HUI or Mackie Control protocols, for
easier setup and bi-directional integration with the mixer.
RACKMOUNTABLE DIGITAL MIXER
FOR LIVE, STUDIO AND INSTALLATION
With 24 sources to the mix including stereo inputs
and returns, Qu-16 is the equivalent of a 30 channel
analogue console with extensive outboard
equipment (22 gates, 35 compressors, 12 graphic
equalizers and 4 stereo effects)! Add the unique
Qu-Drive recording facilities, dSNAKE connectivity
and Total Recall scene system and you get a true
powerhouse in just 19 inches.
Balanced Stereo Inputs
All 12 Mix outputs on XLR
Ethernet network port for
remote / wi-fi control
2TRK Out
Patchable Alt Out
dSNAKETM Remote Audio
port for digital snake and
personal monitoring
AES digital stereo output
Dedicated Talkback
preamp
USB audio streaming,
class-compliant on Mac
Quickly access
preamp gain, HPF
frequency, PEQ
settings, gate &
compressor
threshold, and PAN.
GEQ Flip toggles the
faders to Graphic EQ
sliders.
Copy, Paste or
Reset any section
of processing or a
whole channel or
mix. The Fn
(Function) key
brings up a popup
page relevant to
the current screen.
Fader strips with
Mute, Select, PAFL
switches, signal
meter, and 100mm
motorised fader.
Access all the
processing for each
strip with Sel.
The Peak indicators
are multi-point –
they are triggered
by any signal clip in
the channel path.
16 faders in 3 layers
give access to all
channels and
masters in a
compact space.
Assign any
combination of
Inputs, FX sends, FX
returns and Mix
masters to the
Custom layer.
5” 800x480 colour
ST3 Mini-jack stereo
touchscreen with
input for portable
dedicated navigation
devices.
keys and rotary encoder.
Qu-Drive multitrack /
stereo recording and
playback, data
transfer, archiving
and firmware update.
Motorised faders provide total
recall of mix levels, giving full
benefit from the scene recall
system and ensuring the fader
is always in the right position
even when swapping between
the layers.
Qu features crystal clear
AnaLOGIQ total recall
pad-less preamps, optimised
for transparency and low
harmonic distortion.
Qu-Drive is an integrated USB
recorder, allowing multitrack
recording and playback
to/from an external USB drive.
Qu’s high resolution, full
colour Touchscreen and the
intuitive Touch Channel
interface provide easy access
to channel processing, the FX
racks and all setup and
system management controls.
Qu features a library of FX
emulations taken from the
iLive pro touring series,
including classic reverbs,
gated reverbs, delays and
modulators.
Allen & Heath’s proprietary
dSNAKE low latency audio
connection enables Cat5
connection to a remote audio
rack, or to the ME personal
mixing system.
Qu is compatible with Allen &
Heath’s ME Personal Mixing
System – so you can add
ME-1 personal mixers to your
setup to allow performers to
control their own monitor
mixes.
A free iPad app gives instant
wireless control of the mixer,
so you can tweak the PA,
adjust the monitors on stage,
and even mix the show from
the audience.
Access mix sends
on faders with the
dedicated Mix keys.
4 user-assignable
SoftKeys for scene
recall, mutes, tap
tempo and more.
iPad Shelf.
Groups 1-4 are typically used as subgroups to
LR for level masters and/or processing, for
example to compress a drum kit or to tame
multiple lavalier microphones with a single
graphic equalizer.
Quickly access preamp gain, HPF
frequency, PEQ settings, gate &
compressor threshold, and PAN. The
Source key toggles between analogue
inputs or USB.
Welcome to the Matrix – 2 additional stereo
outputs equipped with full processing add to
the extensive I/O of the Qu-24. It is a ‘mixer
within a mixer’ fed from any combination of
Group 1-4, Mix 1-10, and main LR. It can be
used to provide a broadcast feed, a recording
mix, or duplicate the main outputs for delay
stacks and fill / zone speakers where
independent GEQ and delay is applied.
ST3 Mini-jack stereo
input for portable
devices.
COMPACT DIGITAL MIXER
FOR LIVE, STUDIO AND INSTALLATION
With 32 sources to the mix including stereo inputs and returns,
Qu-24 is the equivalent of a 38 channel analogue console with
extensive outboard equipment (30 gates, 50 compressors, 20
graphic equalizers and 4 stereo effects)! On top of this Qu-24 adds
extra SoftKeys, a complete Matrix system and two stereo Groups.
Fader strips with
Mute, Select, PAFL
switches, signal
meter, and 100mm
motorised fader.
Access all the
processing for each
strip with Sel.
The Peak indicators
are multi-point –
they are triggered
by any signal clip in
the channel path.
24 faders in 3 layers
give access to all
channels and
masters in a
compact space.
Assign any
combination of
Inputs, FX sends, FX
returns, Groups, Mix
and Matrix masters
to the Custom layer.
GEQ Flip toggles the
faders to Graphic EQ
sliders.
Copy, Paste or
Reset any section
of processing or a
whole channel or
mix. The Fn
(Function) key
brings up a popup
page relevant to
the current screen.
5” 800x480 colour
touchscreen with
dedicated navigation
keys and rotary encoder.
Qu-Drive multitrack /
stereo recording and
playback, data
transfer, archiving
and firmware update.
Motorised faders provide total
recall of mix levels, giving full
benefit from the scene recall
system and ensuring the fader
is always in the right position
even when swapping between
the layers.
Qu features crystal clear
AnaLOGIQ total recall
pad-less preamps, optimised
for transparency and low
harmonic distortion.
Qu-Drive is an integrated USB
recorder, allowing multitrack
recording and playback
to/from an external USB drive.
Qu’s high resolution, full
colour Touchscreen and the
intuitive Touch Channel
interface provide easy access
to channel processing, the FX
racks and all setup and
system management controls.
Qu features a library of FX
emulations taken from the
iLive pro touring series,
including classic reverbs,
gated reverbs, delays and
modulators.
Allen & Heath’s proprietary
dSNAKETM low latency audio
connection enables Cat5
connection to a remote audio
rack, or to the ME personal
mixing system.
Qu is compatible with Allen &
Heath’s ME Personal Mixing
System – so you can add
ME-1 personal mixers to your
setup to allow performers to
control their own monitor
mixes.
A free iPad app gives instant
wireless control of the mixer,
so you can tweak the PA,
adjust the monitors on stage,
and even mix the show from
the audience.
Access mix sends
on faders with the
dedicated Mix keys.
Qu-24 packs 10
SoftKeys for more
user-assignable
functions such as
Mute Groups, Tap
Tempo, Scene
navigation or PAFL
Clea
Clear.
Balanced Stereo Inputs
Ethernet network port for
remote / wi-fi control
dSNAKETM Remote Audio
port for digital snake and
personal monitoring
USB audio streaming,
class-compliant on Mac
All 20 Mix outputs on XLR
2TRK Out
Patchable Alt Out
AES digital stereo output
Dedicated Talkback
preamp
ARMed to the Hilt
Qu-Pad
Add the Qu-Pad iPad app to your Qu setup and you’re free
to adjust the monitors on stage, roam around the venue
whilst tweaking the PA, and then mix the show from the
heart of the audience. Qu-Pad connects to the mixer over
Wi-Fi* and gives instant access to all live mixing
parameters and settings.
*Requires the connection of a Wi-Fi router or access point to the Qu-16 or
Qu-24 Network port..
ME Personal Mixing System
Qu-16 and Qu-24 are fully compatible with our ME Personal
Mixing System. Any number of ME-1 personal mixers can
be chained from the dSNAKETM port (or from an AR2412
Stagebox if you’ve got one connected to the dSNAKETM
port). Each performer can be given tailored control over
their own mix, leaving the engineer free to focus on the
audience experience. Find out more at allen-heath.com/ME
dSNAKETM
Qu-16 and Qu-24 are self-contained mixers, so if you’ve
already got the analogue cables you’re good to go. If you’re
thinking of trading in the copper multicore for a Cat5 digital
snake, Qu’s dSNAKETM port has you future-proofed,
allowing connection to a remote AR2412 or AR84
AudioRack.
dSNAKETM is our proprietary networking solution, boasting
a transport latency of only 105us over cable runs of up to
120m / 390’. So if you’re mixing FoH you can place your I/O
on the stage and run a single Cat5 cable back to the Qu
mixer in the mix position.
Accessories
AR2412 – 24 inputs, 12 outputs AudioRack with dSNAKE connection and expansion port for personal monitoring.
AR84 – 8 inputs, 4 outputs AudioRack with dSNAKE connection.
AH7000 – 80m drum of Neutrik EtherFlex Cat5 with locking connectors.
LEDLamp – Variable brightness 18” gooseneck lamp.
QU-16-RK19 – Rack mounting kit for Qu-16.
AP9262 – Dust cover for Qu-16.
AP9458 – Dust cover for Qu-24.
Qu mixers are equipped with 5 cores of high efficiency
ARM core processing, with dedicated ARM cores
running the touchscreen display and surface, USB
streaming, Qu-Drive multi-channel USB recording /
playback, Ethernet and fader automation. Between
them the ARM cores provide state-of-the-art
processing, working in parallel to deliver extensive
control, instant-on operation, and lightning-fast
response.
The mixer’s DSP farm exploits next generation dual
core DSPs. With plenty of DSP power under the hood
the channel processing is only using a fraction of
capacity, so Qu is future-proofed, with ample room for
updates and extra functionality.
The DSP architecture employs varied bit depths,
tailored to specific algorithms, with 48 bits on critical
EQ functions and a 56 bit accumulator on the mix bus
where it really counts, allowing every nuance of the
audio to be captured in the final mix.
The Shape of Things to Come
Made from 18 gauge, cold-rolled Zintec steel, Qu’s
distinctive frame is designed for strength and rigidity.
We’ve done unspeakable things to that chassis in the
lab and it’s taken everything we’ve thrown at it – even
being stomped on by our resident ex-tank commander.
Silence is a precious commodity in the live or studio
environment, which is why nobody wants those
moments of stillness ruined by the whirring of fans
coming from the mix position. Qu’s sleek profile
generates optimal airflow through the mixer, eliminating
the need for any fans.
The shape has some unexpected benefits too. When
we started taking Qu out to gigs we soon found the
space beneath it incredibly useful for keeping our USB
drive, talkback mic, cue sheet and other clutter tucked
out of the way. We’ve even had engineers hanging the
mixer from a handy scaffold bar and mixing vertically.
Example Applications
Live
Qu-24 with traditional analogue
multicore from stage and direct
recording on USB media.
Optional
Studio
Qu-16 as tracking mixer, soundcard,
DAW controller and monitor router,
plus optional ME-1s for personal cue
foldback to recording room.
Live with Remote Audio
Qu-Pad
Qu-16 with dSNAKETM Cat5 digital
snake connection to an AR2412
Audio Rack, direct recording on USB
media, iPad wireless control and
optional
ME-1s
for
personal
monitoring on stage.
Optional
Block Diagrams
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