Allen & Heath GR4 Rack Mount Zone Mixer

Allen & Heath GR4 Rack Mount Zone Mixer

Allen & Heath GR4 Rack Mount Zone Mixer

B&H # ALAHGR4 MFR # AH-GR4
Allen & Heath GR4 Rack Mount Zone Mixer

Allen & Heath GR4 Rack Mount Zone Mixer

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Product Highlights

  • Four Mic Inputs, Four Stereo Inputs
  • 1/8" Stereo Aux Input
  • Four Zone Outputs
  • Individual Control of Mix to Zone 1 & 2
  • Gain and 2-Band EQ for Mic Inputs
  • 2-Band EQ for Zone Outputs 1 & 2
  • Primary and Secondary Mic Modes
  • Emergency Mic Mode & Juke Box Mode
  • Includes Rack Ears and Mounting Hardware
  • Includes 14 Phoenix Connectors
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  • 1Description

The GR4 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 four 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 four 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. An additional two mono zone outputs (3 & 4) are available with mix output being selectable from 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 GR4 ships with a power cord, blanking bung covers, a set of rack ears, four countersunk Pozi screws, and 14 Phoenix connectors.

Connectivity
  • Mic Inputs: Four mic inputs on rear mount Phoenix connectors with MIC1 selectable to an optional front mounted XLR
  • Line Inputs: Four stereo inputs on rear mount phono connectors. An additional front mounted 3.5mm jack socket overrides input 4 phono source
  • Zone Outputs: Two stereo (mono selectable via internal jumper) zones on rear mount Phoenix connectors. An additional two mono zone outputs are available with mix output being selectable from internal jumpers.
  • 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
Features
  • Mixing: Individual mix and selectable control of all inputs to Z1 & Z2. Multiple options for configuring mix outputs to Z3 & Z4 (via internal jumpers)
  • 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
Advanced Features
  • Entering programming mode allows the following parameters to be adjusted
    • Ducker attenuation
    • Ducker hold time
    • Ducker release time
    • Music crossfade time
    • Jukebox hold time
    • Jukebox release time
In the Box
Allen & Heath GR4 Rack Mount Zone Mixer
  • IEC Power Cord
  • 4 x Blanking Bung
  • Set of Rack Ears
  • 4 x M3 X 6mm Countersunk Pozi Screws
  • 2 x HDR Plug Phoenix 2W
  • 2 x HDR Plug Phoenix 4W
  • 10 x HDR Plug Phoenix 3W
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Microphone Inputs 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
    Stereo Inputs 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
    Zone Output 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
    Noise 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)
    Power 100 - 240 VAC, 50/60 Hz, 20 W
    Power Consumption: 15 W (with no remote attached)
    Dimensions (H x L x W) 1.9 x 9.5 x 17.2" / 48.0 x 242.0 x 438.0 mm
    Weight 7.5 lb / 3.4 kg
    Packaging Info
    Package Weight 10.65 lb
    Box Dimensions (LxWxH) 20.8 x 14.0 x 8.7"

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