Allen&Heath GR2 PL-12 USER GUIDE 1 - Manual (Page 10)

10 GR2 User Guide
Front Panel – Operator Controls
1. Rack ears
These are supplied fitted ready for 19” rack or furniture
mounting. For desk top operation they may be removed
using a T10 Torx screwdriver.
2. Feet
These are supplied fitted ready for desk top operation. If
they need to be removed for installation into a 1U rack
space then use a small slotted screwdriver to lever out
the plastic rivet from the centre of each foot.
3. Power on indicator
Lights to indicate that mains power is applied to the unit.
4. Cover plate
A cover plate protects the configuration settings and
provides a space for fitting a custom label to identify the
control functions. Use a 2mm Allen key to remove the
three hex head screws before lifting off the plate to
access the configuration switches and trimmers.
5. Input level controls
Rotary controls to adjust the levels of the microphone
and music input channels from fully off to +6dB boost.
0dB unity position is 3 o’clock. If required, the knobs
may be pulled off and the settings protected for day-to-
day operation using the plastic hole plugs provided.
6. Input signal meter
A 2-colour indicator lights green when a signal level
above -14dB is detected, and red for signals above
+14dB. The input gain should be reduced if the meter
consistently lights red. The signal is pre level control.
7. Mic mute switch
Turns off the mic mix channel. The red indicator lights
when the mics are muted either by this switch or remote
control. This does not affect the paging mic.
8. Mic priority switch
Turns off all mics except mic 1 (or 1 and 2 if mic 1 has
been configured for paging). Use this function for
chairman or MC override using mic 1 (2). The red
indicator lights when priority is selected either by this
switch or remote control. The priority function does not
affect the paging mic.
9. Mic mix selected indicators
Lights when the mic mix has been configured to route to
the zone. One for each zone.
10. Source select keys
Use the < and > keys to scroll through the available
music sources for each zone. They are disabled if
remote control is configured.
11. Zone level controls
Rotary controls to adjust the output level of each zone
from fully off to fully on (0dB unity gain). Disabled if
remote control is configured. Does not affect the page
mix level which is routed to the zone after the level
control. If required, the knobs may be pulled off and the
settings protected using the plastic hole plugs provided.
12. Output signal meter
A 2-colour indicator lights green when a signal level
above -14dB is detected, and red for signals above
+14dB. The signal is post level control.
13. Music 1-3 source selected indicators
Light when the associated music source is selected for
the zone. All light if ‘mix all’ mode is configured.
14. Music 4 source selected indicator
Lights when mic 5/6 has been configured as music
source 4, and has been selected using the panel or
remote source select keys or mix all function.
15. Music mute switch
Turns off the current music source selection. The red
indicator lights when the source is muted by the switch.
16. Alarm indicator
The red indicator lights when the zones have been
muted by an external trigger wired to the utility remote
socket. Does not affect the paging channel which
remains active for paging or evacuation messages.
17. Zone 1 mono switch
Sums the stereo zone L and R signals for mono
operation.
AUDIO ZONE MIXER
GR2
ALLEN&HEATH priority mute
mic 3 mic 2 mic 1 mic 6 mic 5 mic 4 music 4 mics zone 1 zone 2 alarm music 3 music 2 music 1
mute > mono < source > < source
2 1 2 1
mic mic music
2 1 2 1 2 1
KNOB PLUG PRESET
5
6 7 8 9 14 13 15 16
1
3
2
4
11
17
10 12