ALLEN & HEATH ANALOGUE ZONE Series Operation manual

ALLEN&HEATH
INSTALLATION & USER GUIDE
ANALOGUE ZONE SERIES

GR4 User Guide 2 AP10223 Issue_2
GR products comply with the European Electromagnetic Compatibility
directive 2014/30/EU and the European Low Voltage directive
2014/35/EU.
Any changes or modifications to the product not approved by Allen &
Heath could void the compliance of the product and therefore the
user’s authority to operate it.
GR4 User Guide
Copyright © 2016 Allen & Heath. All rights reserved.
ALLEN&HEATH
Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
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:
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.
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.

GR4 User Guide 3 AP10223 Issue_2
Contents
Introduction .....................................................................................................................................4
Packed Contents.............................................................................................................................4
Front Panel ......................................................................................................................................5
3.1 Input Section.............................................................................................................................5
3.2 Output Section..........................................................................................................................6
3.3 General .....................................................................................................................................7
Rear Panel .......................................................................................................................................7
4.1 General .....................................................................................................................................7
4.2 Control Section.........................................................................................................................8
4.3 Output Section..........................................................................................................................8
4.4 Input Section.............................................................................................................................9
Installing GR4 ................................................................................................................................10
5.1 Mounting the unit....................................................................................................................10
Connecting to GR4........................................................................................................................11
6.1 Microphone Inputs .................................................................................................................11
6.2 Stereo Inputs ..........................................................................................................................11
6.3 Zone Outputs..........................................................................................................................12
6.4 Alarm Input .............................................................................................................................13
6.5 Page Input ..............................................................................................................................14
6.6 Remote Connection ...............................................................................................................14
Setting up GR4 ..............................................................................................................................16
7.1 Operating Features ................................................................................................................16
7.2 Internal Jumper Settings ........................................................................................................17
7.3 Dip Switch Settings ................................................................................................................18
7.4 Programming Parameters......................................................................................................19
FAQ................................................................................................................................................20
Block Diagram...............................................................................................................................21
Specifications.............................................................................................................................22
Connection Diagram..................................................................................................................23
Application Examples ................................................................................................................24
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.

GR4 User Guide 4 AP10223 Issue_2
Introduction
8in / 4out Zone Mixer
The GR4 is a 1U rack-mounting or desktop
audio mixer, providing simple yet
comprehensive control of background music
and paging in bars, restaurants, stores and
other leisure / retail environments. Standout
features include optional remote wall plates, a
mic input on the front panel, plus a 3.5mm jack
on the front for portable music sources.
Packed Contents
The following items are included in the box when the GR4 is shipped.
1x GR4 Zone Mixer
1x User Guide (AP10223).
1x ROHS Addendum Notes (AP7014).
1x Safety Instructions (AP9240/CL1-1) - PLEASE READ BEFORE CONTINUING WITH THIS MANUAL.
1x Mains Cable
(IEC C13 to local
mains connector)
1x Set of Rack
ears
4x M3 X 6mm
Countersunk
Pozi screws
2x Header Plug
Euroblock 2-
Pole
2x Header Plug
Euroblock 4-
Pole
10 x Header Plug
Euroblock 3-Pole
19 x Blanking
Bung

GR4 User Guide 5 AP10223 Issue_2
Front Panel
3.1 Input Section
①MIC SELECT –a user selectable switch for
MIC 1 input. MIC 1 signal can either be derived
from the rear mount Euroblock or front mount
XLR connectors. Use pointed object to select
switch.
②MIC 1 INPUT –Front mount XLR
receptacle for MIC 1 input.
③MIC LEVEL –Adjustable rotary level
control for MIC inputs 1-4. Mic level control of
Off to +6dB.
④ST LEVEL –Adjustable rotary level control
for LINE inputs 1-4. Line level control of Off to
+6dB.
⑤Hi LEV LED –LED level indicator which
illuminates when signal to MIC 1-4 and ST 1 to
4 is approaching clip level. The Hi Level LED
illuminates when one or more inputs are at
3dB before clip level.
⑥AUX INPUT –Auxiliary input on 3.5mm jack
socket.
This input will override any input connected
to ST4 on the rear Euroblock connector.
⑦Z1 SELECTION INDICATOR –LED
indicator showing input selection to ZONE 1
mix bus.
⑧Z2 SELECTION INDICATOR –LED
indicator showing input selection to ZONE 2
mix bus.
①
②
③
④
⑤
⑥
⑦
⑧
⑤

GR4 User Guide 6 AP10223 Issue_2
3.2 Output Section
①Z1 MIC MIX OUTPUT LEVEL –Adjustable
rotary level control for MIC Mix to Zone 1.
Output level control Off to +6dB.
②Z1 MIC SELECT SWITCH –Output Zone
Mic selection switch used to add/remove mic
sources to/from the output Zone 1 mix signal.
The following combinations are supported;
Mic 1 only/Mics 2-4 only/All Mics
③Z1 OUTPUT METER - Three-segment LED
meter showing L & R output level of Z1 Mix.
Illumination will occur at -18, +3 and +17dB.
④Z1 MUSIC OUTPUT LEVEL –Adjustable
rotary level control of Stereo sources to Zone
1. Output level control Off to +6dB.
⑤Z1 MUSIC SELECT SWITCH –Output
Zone Music selection switch used to select
Stereo sources to output Zone 1 mix.
⑥Z1 OUTPUT EQ –LF control of Zone 1
output signal. Shelving EQ with +/-15dB with
cut-off frequency at 80Hz.
⑦Z1 OUTPUT EQ –HF control of Zone 1
output signal. Shelving EQ with +/-15dB with
cut-off frequency at 8kHz.
⑧Z2 MIC MIX OUTPUT LEVEL –Adjustable
rotary level control for MIC Mix to Zone 2.
Output level control Off to +6dB.
⑨Z2 MIC SELECT SWITCH –Output Zone
Mic selection switch used to add/remove mic
sources to/from the output Zone 2 mix signal.
The following combinations are supported;
Mic 1 only/Mics 2-4 only/All Mics.
⑩Z2 OUTPUT METER - Three-segment LED
meter showing L & R output level of Zone 2
Mix. Illumination will occur at -18, +3 and
+17dB.
⑪Z2 MUSIC OUTPUT LEVEL –Adjustable
rotary level control of Stereo sources to Zone
2. Output level control Off to +6dB.
⑫Z2 MUSIC SELECT SWITCH –Output
Zone Music selection switch used to select
Stereo sources to output Zone 2 mix
⑬Z2 OUTPUT EQ –LF control of Zone 2
output signal. Shelving EQ with +/-15dB with
cut-off frequency at 80Hz.
⑭Z2 OUTPUT EQ –HF control of Zone 2
output signal. Shelving EQ with +/-15dB with
cut-off frequency at 8kHz.
⑮Z3 MIX OUTPUT LEVEL –Adjustable
rotary level control of Mix to Zone 3. Output
level control Off to +6dB.
③
⑥
⑤
②
⑨
⑬
⑫
⑦
⑭
⑧
⑪
④
①
⑯
⑱
⑩
⑮
⑰

GR4 User Guide 7 AP10223 Issue_2
①
①
⑯Z3 OUTPUT METER - Three-segment LED
meter showing mono output level of Zone 3
Mix. Illumination will occur at -18, +3 and
+17dB.
⑰Z4 MIX OUTPUT LEVEL –Adjustable
rotary level control of Mix to Zone 4. Output
level control Off to +6dB.
⑱Z4 OUTPUT METER - Three-segment LED
meter showing mono output level of Zone 4
Mix. Illumination will occur at -18, +3 and
+17dB.
3.3 General
①POWER INDICATOR –LED indicator
showing the unit has power. Also used to
indicate when unit is in ‘Programming’ mode
(see section 6.4).
②MAINS SWITCH –Switch to power the unit
ON/OFF.
Note: The mains button can be removed and
replaced with a blanking bung to avoid
accidental powering off of the unit.
Rear Panel
4.1 General
①AC POWER
IEC receptacle to connect mains power cable
(included). 100V to 240V accepted.
②KENSINGTON LOCK
Kensington lock cut-out for securing unit.
②
②

GR4 User Guide 8 AP10223 Issue_2
②
①
4.2 Control Section
①DIP SWITCHES
Dip switches used to control priority settings,
zone lock, remote operation and contact
closure configuration.
(See section 6.3 for detailed description).
②ALARM INPUT
Contact closure (DIP switch option for
Normally Open/Closed) for emergency input
detect. On activation all inputs will fade to the
pre-set level except for Mic 1 and Z1 &Z2
LED’s will flash quickly. Normal operation will
resume once contact is reset to original state.
③PAGE INPUT
Contact closure (DIP switch option for
Normally Open/Closed) for paging
announcements. On activation all inputs will
fade to the pre-set level except for Mic 1 and
Z1 & Z2 LED’s will flash slowly. Normal
operation will resume once contact is reset to
original state.
④ANALOGUE ZONE REMOTE
4-pole Euroblock connector for connection of
custom or 3rd party volume and/or source
selection panels.
(See section 6.6 for detailed description).
⑤DIGITAL ZONE REMOTE
RJ45 connector for use with the Allen & Heath
PL-14 remote controller.
(See section 6.6 for detailed description).
4.3 Output Section
①Z3 & Z4 OUTPUTS
Mono, balanced zone outputs on Euroblock
connector.
②Z1 & Z2 OUTPUTS
Stereo (mono configurable via internal
jumpers) balanced outputs on Euroblock
connector.
③
①
⑤
②
④

GR4 User Guide 9 AP10223 Issue_2
③
①
②
4.4 Input Section
①STEREO INPUTS
Line level inputs 1 to 4 on unbalanced phono
connectors.
Note: Unloaded Phono connectors can
induce noise on the output if the input level is
not on the fully off position. Either ensure
unused channels have Zero Gain/Level or use
termination connectors on unused inputs.
②MIC INPUTS
Microphone input on balanced Euroblock
connector.
Note: Mic 1 is selectable between rear
Euroblock and front mount XLR via front
mount switch.
③MIC INPUT ADJUSTMENT
Microphone gain, Lo and Hi EQ trim pots used
to adjust the input sensitivity of the pre-
amplifier channel* and to adjust the EQ setting
of the MIC channel.
*Setting the channel gain
1. Connect the microphone to be used
with the associated input.
2. Speak into the microphone whilst
adjusting the gain trim with a small flat
blade screwdriver.
3. Adjust the trim until the Hi Lev LED
illuminates and then trim back the level
slightly so it no longer illuminates.
4. Further adjustments may be required
to suit the dynamics of the users’
normal range.

GR4 User Guide 10 AP10223 Issue_2
Installing GR4
5.1 Mounting the unit
The GR4 can be used as a stand-alone unit
and placed on a hard surface or rack-mounted
in a standard 1U 19” profile.
You will need the following items;
T8 Torx screwdriver
Small flat blade screwdriver
Rack ears (supplied)
4 x M3 Torx screws (supplied)
Posi Screwdriver
4 x M6 Screws
To rack-mount the unit follow the below
procedure;
1. Using the supplied rack ears and M3 Torx
screws fit to the unit as in the below
diagram.
M3 Torx ScrewM3 Torx Screw
Rackear
Be sure to use the supplied screws or
exact replacements (damage to internal
PCB’s can result when using longer
screws).
2. Using the small flat bladed screwdriver
gently remove the four rubberized feet on
the base of the unit.
Gently prize the central plastic grommet
away from the unit. Once removed the
rubberized feet can be strored safely for
future use.
To reinstate simply push the grommet
into place.
3. Install within the 19” rack making sure the
unit is secure.
Please ensure you have enough depth
within the rack to accommodate the GR4
together with sufficient cable bending
radius (the GR4 is 220mm deep).
Note: Please ensure adequate ventilation
is provided and the sides of the unit are
not obstructed to maintain adequate
airflow.