Allen&Heath GR05 - Manual (Page 4)

4 GR05 User Guide
Welcome to the GR05
The GR05 is a 1U rack or desk mount audio zone mixer for installation applications such as
paging and background music systems in restaurants, retail outlets, leisure centres, clubs,
theatres, business offices etc. It has a flexible architecture which allows easy custom
configuration by the installer to exactly suit the requirements of the installation. Once installed it
presents a simple control interface for day to day operation by non-technical staff.
The GR05 has 2 microphone inputs and 3 stereo line inputs. These can be assigned to 4 zone
outputs configurable in mono or stereo pairs and controlled by front panel or remote level
controls. Ducking, EQ and muting can be configured. Further inputs and outputs are available
using the expander system.
The next page summarises the facilities which can be configured by the installer to satisfy the
needs of the installation.
Control Panel
page 10
This has a simple layout for easy day to day control of
audio levels and zone switching by non-technical
operators. 3-colour LED indicators provide dynamic
indication of signal levels and system status.
The installer decides which controls are available to the
operator. Others can be removed, configured as preset
trimmers or locked out to prevent accidental operation.
Large write-on blocks allow custom identification of the
controls.
Connector Panel
11
Pluggable connectors are provided for all audio inputs
and outputs, the expander / remote facility, and mains
input. This allows the unit to be installed and removed
independent of the wiring harnesses.
The mains power switch is rear panel mounted to
prevent illegal operation. The unit serial number and
mains voltage setting is marked on the rear panel.
Gain trimmers are included to match the microphone
levels to the unit. These can be
configured for easy knob access, preset trimmers, or
locked out once set.
Cover
6
The top cover is removable to allow the installer to
configure the internal links and trimmers. Once
configured, the cover must be refitted.
Rack Ears
8
The two rack ears allow the unit to be mounted in a
standard 19” rack case along with other equipment in
the system. For desktop operation these may be
unscrewed and removed.
Plastic Feet
8
A set of plastic feet is fitted to the unit for desktop use.
These may be removed if required for rack mounting.
Hole Plugs
10
A bag of hole plugs is provided for front and rear panel
control lockout. Control knobs may be removed and the
front panel holes plugged to prevent the operator
changing the settings.