Pro C 28 (proc28
Digital FIR Controller
PRO C 28
Operators Guide
& Connection Diagrams
058-E0161
Version 060426
SW Rev KH 1.045
K+H Vertriebs- und
Entwicklungsgesellschaft mbH
Auf dem Kessellande 4a •
30900 Wedemark / Germany
Tel: +49 (0) 5130 5848-0
Fax: +49 (0) 5130 5848-11
Email: info@klein-hummel.de
www.klein-hummel.de
www.klein-hummel.com
K+H Vertriebs- und Entwicklungsgesellschaft mbH
1. Operating Instructions
IR Sensor for
Remote Control
KLEIN HUMMEL
SHIFT
LEFT
INPUT
Power Switc
REMOTE
LEFT
-30 -24 -18 -12 -6
0
+6 +12 +18 +24
RIGHT
LIMIT
SUB
BASS
MID
HIGH
RIGHT
SYSTEM
MAIN
EQ
POWER
LOCKED
Input Signal Level
LED Indicators
AD CLIP
MIDI
Limiter & Status
LEDs
VF-Display
Menu Selection
Keys & LEDs
Navigation Keys
& Encoder
1.1 Controls and Displays
•
Menu Selection Keys: Operation of the digital controller is based on a menu structure, in
which the setups and parameters can be accessed via the three Menu Selection Keys
(System, Main, and EQ):
♦
SYSTEM Menu: for infrequently used system adjustments, e.g. display brightness,
password changes, etc.
♦
MAIN Menu: for recalling and storing system setups, selecting parameters, changing
settings, etc. In addition, the FIR Filter parameter setup files can be recalled.
♦
EQ Menu: for recalling and storing parametric equalizer and IIR Filter setups
•
VF-Display: the upper line in the VF display shows the menu option(s), e.g. Input Gain and
Balance. The lower line displays the parameter value(s) that can be changed, e.g. –20 dB
and L=R= 0 dB.
•
Up (▲) / Down (▼) Arrow Keys: for scrolling through the menu and selecting setups,
parameters or options.
•
Left (◄) / Right (►) Arrow Keys: for selecting one of the parameters, within a menu, that
is displayed in the upper line (e.g. Input Gain or Balance). The blinking cursor will indicate
which parameter is selected.
•
Rotary Encoder: for changing a parameter value or option. Simultaneously pressing the
rotary encoder while changing the numerical value increases the increment (by a factor of
10, or by 6 dB, etc.). For some parameters, the encoder must be pressed after the new
value is set, to store the new value. The round cursor in the upper line of the display will
blink when a value is different than the stored value and will stop blinking when the new
value is stored (or when the value is the same as the stored value) .
1.2 Operation
•
Loading and Changing Setups: Press the MAIN menu key and then press the Down
arrow key to scroll down through the menu until Load Setup is displayed. The first Setup
number / name displayed is the one that is currently loaded (the round cursor in the upper
right corner of the display will not blink). Turn the encoder until the desired setup number /
PRO C 28
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
name is displayed (the round cursor in the upper right corner will blink). To load this setup,
press the encoder knob (the round cursor will stop blinking). A Setup includes all of the
settings for each parameter in the MAIN menu (except for Input Gain). Setups 001 through
004 can also be selected with the infrared Remote Control using the Setup 1, 2, 3 and 4
buttons.
•
Input Gain (Volume) Adjustments: Press the MAIN menu key and then press the Down
arrow key to scroll through the menu until Input Gain is displayed. The level for the input
signals (analog or digital) may be changed by turning the encoder. Volume level can also
be changed with the Remote Control using the Vol+ / Vol- buttons. Note: The PRO C 28 will
display the Input Gain mode when power is first turned on or when the controls have not
been used for over 5 minutes.
•
Channel Balance Adjustments: Press the MAIN menu key and then press the Down
arrow key to scroll through the menu until Input Gain and Balance is displayed. Press the
Right arrow key so that the cursor blinks on Balance. The relative balance between the
input signal levels (analog or digital) may be changed by turning the encoder (left or right).
•
Delay Settings for Satellites und Subwoofers: Press the MAIN menu key and then press
the Down arrow key until Delay Link is displayed. Turn the encoder until Off is displayed on
the lower line. Then press the Up arrow key until Delay Sub Low Mid Hi (not Master
Delay or Delay Offset !) is displayed. Press the Left / Right arrow keys to select Sub Low
Mid or Hi (be sure that LR, not L, is displayed on the lower line !). Turn the encoder to set
the delay time in ms. Delay changes occur in real-time.
Note: use Delay Link to link the delay settings for several outputs together, so that their
delay settings can be changed simultaneously
•
Gain Settings for Satellites und Subwoofers: Press the MAIN menu key and then press
the Down arrow key until Gain Sub Low Mid Hi (not Input Gain !) is displayed. Press the
Left / Right arrow keys to select either Sub Low Mid or Hi (be sure that LR, not L, is
displayed on the lower line !). Turn the encoder to set the gain in 0.1 dB increments. Gain
changes occur in real-time.
•
Polarity Inversion for Satellites und Subwoofers: Press the MAIN menu key and then
press the Down arrow key until P.Inv Sub Low Mid Hi is displayed. Press the Left / Right
arrow keys to select Sub Low Mid or Hi (be sure that LR, not L, is displayed on the lower
line !). Turn the encoder to set the polarity inversion to No or Yes (Yes will invert the
signal’s polarity 180 degrees for the selected band). Polarity changes occur in real-time.
1.3 Recalling Loudspeaker FIR Parameter Files:
Note: Loudspeaker FIR Parameter Files are based on the calculated data from K + H, or
consultants, for setting the FIR Filter and Limiter of the PRO C 28 in combination with a specific
loudspeaker/amplifier combination. Important: When either the loudspeakers or amplifier are
changed, the FIR Parameter Files must also be changed!
•
Press the MAIN menu key and then press the Down arrow key until Top Subwoofer (for
standard K+H Matrix-Software) or Filter Select (for special X-Software) is displayed.
For Standard K + H Matrix-Software (i.e. Top Subwoofer is displayed)
• Press the Left arrow key to select Top with the blinking cursor. Turn the encoder until the
desired loudspeaker / delay combination is displayed (the round cursor in the upper right
portion of the display will blink). Then press the encoder to store the displayed setting (the
round cursor will stop blinking).
Note: FIR Parameter Files with phase correction will result in higher delay values than
those without.
PRO C 28
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
•
Press the Right arrow key to select Subwoofer with the blinking cursor. Turn the encoder
until the desired subwoofer setting is displayed (the round cursor in the upper right portion
of the display will blink). Then press the encoder to store the displayed setting (the round
cursor will stop blinking).
For Special X-Software (i.e. Filter Select is displayed)
• Turn the encoder until the desired FIR Parameter Filename is displayed (the round cursor
in the upper right portion of the display will blink). Then press the encoder to store the
displayed setting (the round cursor will stop blinking).
1.4 Saving a Setup
Note: A Setup is a combination of all parameter settings in the MAIN Menu, including the FIR
Parameter File, plus all settings in the EQ Menu - with the exception of Input Gain (Volume).
The PRO C 28 has the capacity to store 60 unique user-defined Setups.
•
Press the MAIN Menu key and then press the Down arrow key until Save Setup is
displayed.
•
Press and release the encoder: Save: Enter Setup Name will be displayed.
> Turn the encoder to select the first character or symbol for the Setup Name
> Press the Up or Down arrow keys to change the character / symbol set
> Press the Right arrow key to move to the next position in the Setup Name
•
Press and release the encoder: Save: Enter Setup No. will be displayed.
> Turn the encoder to select one of the Setup Nos. (001 through 059)
Note: Setup Nos. 001 through 004 can also be selected with the Setup 1 through
Setup 4 keys of the remote Control
•
Then press the encoder to store the Setup
Note: To cancel the procedure before the Setup is stored, press the SYSTEM Menu key.
A stored Setup can be recalled in the MAIN Menu from Load Setup
Since Input Gain (Volume) is not a stored parameter, the volume level remains constant when
different Setups are selected (in Load Setup). Different (relative) volume levels for each Setup
may be stored in Gain Offset in the MAIN Menu. Different (relative) volume levels for the
Analog and Digital Inputs within the same Setup No. may also be stored in Gain Offset.
1.5 Setting the IIR EQs (EQ Menu)
Note: The EQ Menu contains all of the EQ and IIR Filter setups including an EQ for speaker
placement and a 10-Band full-parametric EQ. IIR EQ changes occur in real-time (unlike
changes to the FIR settings).The amplitude and phase behavior is similar to that of an analog
EQ.
1.5.1 Placement EQ
Press the EQ Menu key and then the Down arrow key until EQ Set is displayed. Press the Left
/ Right arrow keys to select LowCut Bass Mid or Hi (indicated by a blinking corsor). Turn
the encoder to set the EQ level in dB.
PRO C 28
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
•
Low Cut: Sets the low cut-off
frequency. The low cut-off can be set
from 40 to 80 Hz (in 10 dB
increments) or to Off (no cut-off) as
shown in the diagram below:
•
Bass EQ: can be set from 0 to –10 dB
(in 2 dB increments), as shown in the
diagram below, without effecting the
Low Cut frequency setting.
PRO C 28
•
Mid EQ: can be set from 0 to –5 dB
(in 1 dB increments), as shown in the
diagram below:
•
Hi EQ: can be set from +1 to –4 dB
(in 1 dB increments), as shown in the
diagram below:
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
1.5.2 10-Band Parametric EQ
The 10-band full-parametric EQ is setup as 10 individual parameters in the EQ Menu.
Press the EQ Menu key and then the Down arrow key until EQ 1 Type Q Hz dB is
displayed.
Note: to have the same EQ settings for the Left and Right channels, be sure that LR, not L, is
displayed on the lower line!
•
EQ Type: Press the Left / Right arrow keys to select Type. Turn the encoder to select the
type of EQ, as described below,
□ HS12 (High-Shelving 12 dB/Oct.)
□ HP12 (High-Pass 12 dB/Oct.).
□ HS 6 (High-Shelving 6 dB/Oct.)
□ HP 6 (High-Pass 6 dB/Oct.)
□ LS12 (Low-Shelving12 dB/Oct.)
□ LP12 (Low-Pass 12 dB/Oct.)
□ LS 6 (Low-Shelving 6 dB/Oct.)
□ LP 6 (Low-Pass 6 dB/Oct.)
□ Peak (Bandpass / bell-shaped curve)
and then press and release the encoder.
•
Q: Press the Left / Right arrow keys to select Q. Turn the encoder to select the Q value.
Note: Q is only adjustable for bandpass filters.
♦ If Peak was selected as EQ Type, Q can be adjusted from 0 to 6355.
♦ Q is adjustable in 0.1 increments from 0 up to 100 (above 3.0 press and hold the
SHIFT key to adjust in 0.1 increments.
♦ To adjust in larger increments, press the encoder while turning it.
•
Frequency: Press the Left / Right arrow keys to select Hz. Turn the encoder to select the
frequency (center frequency for a Peak filter or the –3 dB frequency for a shelving, highpass or low-pass filter). Frequency is adjustable from 0 to 20,000 Hz.
•
Gain: Press the Left / Right arrow keys to select dB (Gain). Turn the encoder to adjust the
Gain in dB (press and hold the SHIFT key to adjust in 0.1 increments). Gain is adjustable
from -99 to +12 dB.
PRO C 28
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
2 Connection Diagram
Ground Lift Switch
Analog Inputs (L, R)
Analog Outputs (L, R)
ANALOG INPUT
ANALOG OUTPUT
Output Type (transformer or
electronically balanced)
Special Multicore Analog
Outputs to connect K + H
Monitors
transformer
balanced
electronically
balanced
RIGHT MULTICORE LEFT
GROUND
LIFT
Right
Right
MAINS
PIN 1
PIN 2
PIN 3
AC 230 V ~ 50 - 60 Hz
AC 117 V ~ 50 - 60 Hz
PIN
1 Low
2 Low
3 Mid
4 Mid
5 High
6 High
7 GND
KLEIN+HUMMEL
PRO C 28
24 BIT, STEREO 4 WAY FIR CONTROLLER
2 TIMES 14 BAND PARAMTETRIC EQ
KLEIN+HUMMEL GmbH D-73760 Ostfildern MADE IN GERMANY
CAUTION!
HIGH
+
-
electr.
bal.
MID
LOW
SUB
OUTPUT / THROUGH
INPUT
transformer
balanced
Left
DIGITAL
IN / OUT
To prevent the risk of fire and shock hazard don´t
expose this appliance to moisture and rain.
Do not open.
Refer to qualified service personnel for service.
RS 232 / MIDI
SETUP MEMORY MODULE
INPUT
Left
RESET
Max. power consumption 50 VA
Mains Supply
value
DIGITAL INSERT
IEC Mains
Socked
Slide switch to select input
mode (transformer or
electronically balanced)
Digital AES/EBU
Output
AES 3 id Input
Digital AES/EBU
Input
Reset Key
25-PIN SUB-D Connector
(RS-232, MIDI, Memory
Module)
•
GROUND LIFT Switch: Disconnects the signal ground from the power supply ground and
should only be switched to the disconnected position when there is excessive audible hum.
•
ANALOG INPUTS: Two XLR-F connectors (labeled LEFT and RIGHT) for balanced analog
input signals. Each Input can be set to transformer balanced or electronically balanced
using the slide switches next to the Inputs.
•
ANALOG OUTPUTS: Eight XLR-M connectors (labeled HIGH MID LOW and SUB for the
LEFT and RIGHT channels) deliver balanced analog output signals. Output type
(transformer or electronically balanced) is factory set and marked on the rear panel.
•
MULTICORE Outputs: Two 7-PIN XLR-M connectors (labeled LEFT and RIGHT) deliver
the same HIGH MID LOW and SUB balanced analog output signals via one multicore cable
for each channel.
•
DIGITAL OUTPUT / THROUGH: XLR-M connector (labeled OUTPUT / THROUGH)
delivers the left and right digital output signals in AES/EBU Format.
•
AES/EBU DIGITAL INPUT: XLR-F connector (labeled INPUT) for digital input signals in
AES/EBU Format. Note: When this input is used for digital signals, no cable can be
connected to the AES 3id INPUT (BNC connector).
•
AES 3id DIGITAL INPUT: BNC connector (labeled INPUT) for digital input signals in AES
3id Format. Note: When this input is used for digital signals, no cable can be connected to
the AES/EBU INPUT (XLR-F connector).
•
RESET Button: to restart the PRO C 28 (same as switching the front panel POWER switch
Off and On).
•
Serial Port: SUB-D 25-Pin connector has several functions:
PRO C 28
o
Serial RS-232 interface for loading the Loudspeaker Parameter Sets from a PC
o
MIDI interface (In, Out, Thru) for daisy chaining several PRO C 28s or connecting
them to other MIDI equipment
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
3 Loading Loudspeaker Parameter Sets into the Pro C 28
Loading Loudspeaker Parameter Sets into the PRO C 28 via the RS-232-interface requires a PC
running in DOS mode. The PRO C 28 and the PC can be interconnected using a 9-Pin D-SUB to
25-Pin D-Sub Modem cable.
Warning: Turn Off all amplifiers connected to the PRO C 28 before beginning this procedure.
The transfer procedure depends on the firmware in the PRO C 28 and is different for the standard
K + H Matrix-Software or the special X-Software.
The easiest way to determine which software is loaded is to look at the displayed parameter for the
ninth Menu step (see Appendix below) in the MAIN Menu:
♦ if Top Subwoofer is displayed, the K + H Matrix-Software is loaded
♦ if Filter Select is displayed, X-Software is loaded
3.1 Standard K + H Matrix-Software: Loading Data Sets with DOS-Batch
In this version of the software, the data records (up to 70) are organized in a matrix structure
with each data record designated by a Monitor-Subwoofer combination. No special software is
required for the data transfer and all required files are provided with the data record.
•
Copy the supplied files into a directory (e.g. PRO C 28 Matrix Files) on the PCs hard drive.
•
Start the transfer procedure with the command “TXMATRX“
•
The MIDI LED on the front panel of the PRO C 28 will be illuminated while the transfer is
occurring.
•
The transfer is complete when Input Gain is displayed on the PRO C 28 front panel
3.2 Special X-Software: Loading MFX Parameter Sets
In this version of the software, the MFX *.blk data files can be loaded directly into the Pro C 28.
Approximately 3 - 5 data files can be loaded, depending on the range (number of filter
coefficients) in the data records
•
In MFX press Alt + E and then select > Crossover Work > Dispatch FIR Set to Hugo from
the Menu to call up the Data Transfer. Then select the files to be transferred.
•
For each data set to be transferred, select:
♦
Append to add a new data set to an existing file
♦
Overwrite to attach a new data set and delete the existing data set
•
Press the “S” key to toggle between overwrite or append mode
•
Press the “L” key to start the data transfer. The MIDI LED on the front panel of the PRO C
28 will be illuminated while the transfer is occurring.
PRO C 28
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
4 Appendix
4.1 Menu options in the MAIN Menu (from top to bottom):
1.
Load Setup: to load a setup
2.
Save Setup: to save a setup
3.
Input Gain: to set the overall gain and balance between channels
4.
Gain Offset: to set a gain offset between the analog and digital inputs
5.
Mute: to activate/deactivate mute and set the attenuation level
6.
Input Select: to select the input signal (analog or digital input)
7.
Digital Output: to activate/deactivate the digital outputs
8.
Input Routing: to select normal, reverse or mono for the inputs
9.
Top/Subwoofer (K+H Matrix-Software) or Filter Select (X-Software):
To select and load the FIR loudspeaker data set from the MFX software
10.
Master Delay: to set the overall delay for all outputs, the minimum value is dependent on
the selected FIR Loudspeaker Data set and represents the total latency
11.
Delay Offset: to set a delay offset between the left and right channels
12.
Mute (Sub Low Mid Hi): to mute individual output channels
13.
Gain (Sub Low Mid Hi): to set individual gain levels for each output channel
14.
Phase Invert (Sub Low Mid Hi): to set individual polarities for each output channel
15.
Delay (Sub Low Mid Hi): to set individual delays for each output channel
16.
Delay Link: to define if/which outputs will be combined for the delay settings in Menu
option 15
17.
Limiter Release: to set the release time for the peak limiter
PRO C 28
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K+H Vertriebs- und Entwicklungsgesellschaft mbH
4.2 Signal Path: PRO C 28
fs
IIR Section
fs
FIR Section
T
High Output
Scaling
A
Hi
10 Band
Parametric IIR EQ
Room EQ
Master Delay
Channel Delay
+
D
T
-
24 Bit delta/sigma
DA (Dither/N.Sh.)
Peak / Thermo
Limiter
X-over + Speaker
FIR-EQ
Symmetrical
Output Stage
High Out
fs
fs/4
Mid Output
Scaling
D
T
Mid
Analog
input
Digital
Input / Insert
Channel Delay
Peak / Thermo
Limiter
X-over + Speaker
FIR-EQ
+
A
-
24 Bit delta/sigma
DA (Dither/N.Sh.)
Symmetrical
Output Stage
Mid Out
(f s/4)*4
fs/16
Low Output
Scaling
D
T
Low
Channel Delay
X-over + Speaker
FIR-EQ
+
A
-
24 Bit delta/sigma
DA (Dither/N.Sh.)
Peak / Thermo
Limiter
Symmetrical
Output Stage
Low Out
A
D
A
D
(f s/16)*16
Dual 24 Bit
delta/sigma
AD Converter
fs/16
Sub Output
Scaling
electr.
symm.
transf.
coupled
Sub
Channel Delay
Input
Transformer
Analog In
(XLR-3)
PRO C 28
D
T
Digital
insert
-
24 Bit delta/sigma
DA (Dither/N.Sh.)
Symmetrical
Output Stage
Sub Out
(f s/16)*16
Digital
trough
Digital Insert/Trough
(AES/EBU)
Peak / Thermo
Limiter
X-over + Speaker
FIR-EQ
+
A
Input Gain
Digital In
(AES/EBU)
Digital In
(S/PDIF)
Parametersatz - Datei
fs
=
verstärkungsbestimmendes
Element
=
System-Abtastfrequenz
page 10 of 10
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