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The GR3 from Allen & Heath is a single rackmount or desktop audio mixer that provides comprehensive control of paging and background music in restaurants, bars, stores, and other retail/leisure environments. The mixer features two mic inputs on the rear panel via Phoenix connectors with an option to select Mic 1 from an XLR input on the front panel. Additionally, there are two pairs of stereo RCA connectors for audio playback devices. The two zone outputs are offered in stereo on Phoenix connectors, but may be changed to mono via internal jumpers. The optional PL-14 remote control provides a rotary volume control with four selectable source switches and connects via standard Cat5e cabling. The GR3 ships with a power cord, blanking bung covers, a set of rack ears, four countersunk Pozi screws, and 10 Phoenix connectors.
Mic Inputs: Two mic inputs on rear mount Phoenix connectors with MIC1 selectable to an optional front mounted XLR
Line Inputs: Two stereo inputs on rear mount phono connectors
Zone Outputs: Two stereo (mono selectable via internal jumper) zones on rear mount Phoenix connectors
Control: Paging and Alarm contact inputs on rear mounted Phoenix connectors allow integration with 3rd party paging stations and fire alarm systems
Optional Remote: Remote control can be achieved via the optional PL-14 Remote connected to the rear mounted RJ45 or custom/3rd party analogue remotes connected to the rear mounted Phoenix connectors
Mixing: Individual mix and selectable control of all inputs to Z1 & Z2
Dynamics: Gain and 2 band EQ available on all mic inputs with an additional 2 band EQ available on Z1 & Z2 outputs
Primary Mic Mode: When audio sensed on MIC1 channel and/or PAGE contact closure is sensed then music is faded to pre-set level and MICSs 2-4 muted for the duration of the announcement. MIC1 zone select LEDs flash slowly when in priority mic mode
Installer Selectable Modes
Primary and Secondary Mic Modes: Perfect for controlling hierarchical microphone feeds such as simple paging announcements
Emergency Mic Mode: For use with 3rd party systems in emergency situations. Mutes all inputs except MIC1 on alarm contact closure
Juke Box Mode: Provides a priority line input to the system for pre-recorded announcements or programed material such as Sports channels
Entering programming mode allows the following parameters to be adjusted
Ducker hold time
Ducker release time
Music crossfade time
Jukebox hold time
Jukebox release time
In the Box
Allen & Heath GR3 Rack Mount Zone Mixer
IEC Power Cord
Set of Rack Ears
M3 X 6mm Countersunk Pozi Screws
HDR Plug Phoenix 2W
HDR Plug Phoenix 4W
HDR Plug Phoenix 3W
Limited 1-Year Warranty
Table of Contents
Mic Input Sensitivity (Gain = Min): 0 dBu Mic Input Sensitivity (Gain = Max): -50 dBu Mic Level control (Max): +5 dB Mic Level control (Min): -80 dB Mic HPF -3 dB: 150 Hz Mic EQ LF: ±15 dB fc = 80 Hz Mic EQ HF: ±15 dB fc = 8 kHz Mic Frequency Response 20 Hz – 20 kHz: ±1 dB Mic THD+n @ 0 dBu in 1 kHz: 0.004% 22 Hz - 22 kHz Mic THD+n @ -30 dBu in 30 dB gain 1 kHz: 0.005% 22 Hz - 22 kHz Mic Hi Level warning LED (Unity gain): +18 dBu Clip level (Unity gain): +21 dBu
ST Input Sensitivity (Gain link OFF): 0 dBu ST Input Sensitivity (Gain Link ON): -10 dBu ST Level control (Max): +6 dB ST Level control (Min): -76 dB ST Frequency response 20 Hz – 20 kHz: ±0.5 dB ST THD+n @ -10 dBu in 1 kHz: 0.015% 22 Hz - 22 kHz ST THD+n @ 0 dBu in 1 kHz: 0.035% 22 Hz - 22 kHz Crosstalk from Unselected Channel: -75 dB @ 1 kHz
Main Zone Level Control (Max): 0 dB Main Zone Level Control (Min): -74 dB Main Zone Hi Lev LED (Unity Gain): +18 dBu Main Zone EQ LF: ±15 dB fc = 80 Hz Main Zone EQ HF: ±15 dB fc = 8 kHz Main Zone Clip Level (Unity gain): +21 dBu
ST Input to Main Zone Output (Unity): -90 dBu 22 Hz - 22 kHz Mic Input Routed at Min Gain as Well: -88 dBu 22 Hz - 22 kHz Mic Input Routed at Max Gain: -77 dBu 22 Hz - 22 kHz (150R source)
100 - 240 VAC, 50/60 Hz, 20 W Power Consumption: 15 W (with no remote attached)