GR4 User Guide
20
AP10223 Issue_2
FAQ
Q: What are the main differences
between the GR4 and GR2?
A: The GR4 has an additional stereo zone
output together with two additional mono zone
outputs which can be individually set to one of
six pre-set mixes. Each microphone input has
individual tone control. Additional connectors
have been added to the front panel in the form
of an XLR Mic input for priority
announcements and a 3.5mm socket has
been added for connection of MP3 players.
The ability to control the mix of mic and music
sources on zone outputs 1 & 2.
Q: My audio sources keep fading in and
out?
A: It is likely that one or more dip switches
have been set to the “ON” position. The GR4
has various “MODES” that allow priority
control of the incoming signals.
Primary Mic Mode
(Dip Switch A).
This
will automatically mute mics 2-4 and
fade the music sources to a pre-defined
level.
Secondary Mic Mode
(Dip Switch B).
This will automatically fade the music
sources to a pre-defined level.
Jukebox Mode
(Dip Switch C & D).
This will fade down the music on all
stereo inputs except for ST3 which is
set as the Jukebox priority input.
Q: Can I control the unit over a standard
network?
A: No, the rear RJ45 port is for use with Zone
remote panels only and is not intended for
connection to a network switch.
Q: How do I control the unit remotely?
A: Remote control can be achieved by either
using the optional Allen & Heath PL-14
controller or via custom wired control. The
“ZONE REMOTE” RJ45 port on the rear of the
unit will accept up to two PL-14’s which are
connected in a ‘daisy-chain’ configuration. An
optional PL-5 remote is also available for
Infrared control of the PL-14. Alternatively a
custom or 3
rd
party 0-10v controller can be
wired to the “REMOTE Z1” and/or “REMOTE
Z2” connectors on the rear of the unit.
Q: I want to change some of the
processors software parameters?
A: These options can be accessed by holding
down Z1 select buttons whilst powering the
unit.
Mic ducking attenuation, hold and
release speeds.
Music cross fade speed.
Juke box attack, hold and release
speed.
Q: Can I change the routing options to
Zones 3 & 4?
A: Yes, Zones 3 & 4 are factory set to output
the mix of Zone 1 & 2 respectively. Utilising
one or a multiple of the internal jumpers it is
possible to create an entirely independent mix
on both Zone 3 & 4. The jumper options are as
below.
Jumper 1 (Default) – Zone 1 mix (Zone
2 mix is default for Zone 4)
Jumper 2 – Zone 2 mix (Zone 1 mix for
Zone 4)
Jumper 3 – Mic 1 only (for both Zone 3
& 4)
Jumper 4 – Mics 2-4 only (for both
Zone 3 & 4)
Jumper 5 – ST3 only (for both Zone 3
& 4)
Jumper 6 – ST4 only (for both Zone 3
