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Allen & Heath GR4 4-Channel Rackmount Multi-Zone Audio Mixer

SKU: AHGR MFR: AH-GR4
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Key Features

  • Effortlessly manage your audio with 4 channels, perfect for multi-zone sound distribution.
  • Achieve pristine sound quality for live events and installations with robust preamps.
  • Integrate seamlessly into any rackmount setup, ensuring a professional and tidy workspace.
  • Experience reliable, low-latency performance essential for critical audio applications.
  • Benefit from exceptional build quality, designed for durability in demanding environments.
  • Enjoy versatile input/output options, making this mixer ideal for various audio sources.
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Allen & Heath GR4 Specifications

Microphone Inputs

Microphone Inputs

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  • Mic Input Sensitivity

    Min. Gain: 0dBu
    Max. Gain: -50dBu

  • Mic Level control

    Min.: -80dB
    Max.: +5dB

  • Mic HPF -3dB

    150Hz

  • Mic EQ

    LF: +/- 15dB fc = 80Hz
    HF: +/-15dB fc = 8kHz

  • Mic Frequency Response

    20Hz - 20kHz: +/-1dB

  • Mic THD+n @0dBu in 1kHz

    0.004% 22-22kHz

  • Mic THD+n @-30dBu in 30dB gain 1kHz

    0.005% 22-22kHz

  • Mic Hi Level warning LED

    +18dBu (Unity gain)

  • Clip level

    +21dBu (Unity gain)

Stereo Inputs

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  • ST Input Sensitivity

    Gain link OFF: 0dBu
    Gain Link ON: -10dBu

  • ST Level control

    Min.: -76dB
    Max.: +6dB

  • ST Frequency response

    20Hz - 20kHz: +/-0.5dB

  • ST THD+n @-10dBu in 1kHz

    0.015% 22-22kHz

  • ST THD+n @0dBu in 1kHz

    0.035% 22-22kHz

  • Crosstalk from unselected channel

    -75dB @ 1kHz

Zone Outputs

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  • Main Zone Level control

    Min.: -74dB
    Max: 0dB

  • Main Zone Hi Lev LED (Unity gain)

    +18dBu

  • Main Zone EQ

    LF: +/-15dB fc = 80Hz
    HF: +/-15dB fc = 8kHz

  • Main Zone Clip level

    +21dBu (Unity gain)

  • ST Input to Main Zone output

    -90dBu 22-22kHz (Unity)

  • Mic Input routed

    Min. gain: -88dBu 22-22kHz
    Max gain.: -77dBu 22-22kHz (150R source)

  • Unit

    15W (no remote attached)

Physical

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  • Dimensions (H x L x W)

    1.9 x 9.5 x 17.2" (4.8 x 24.2 x 43.8cm)

  • Weight

    7.5 lbs (3.4kg)

  • UPC Code

    6938122244955

About Allen & Heath GR4

4 Zone Mixer
GR4 is a 1U rack-mounting or desktop audio mixer, providing simple yet comprehensive control of background music and paging in bars, restaurants, stores and other leisure / retail environments. Standout features include optional remote wall plates, a mic input on the front panel, plus a 3.5mm jack on the front for portable music sources.

Mic + Line Inputs
Four mic inputs on rear mount Phoenix connectors with MIC1 selectable to an optional front mounted XLR. 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.

Paging + Alarm
Paging and Alarm contact inputs on rear mounted Phoenix connectors allow integration with 3rd party paging stations and fire alarm systems.

Remote
Remote control can be achieved via PL-14 Remote connected to the rear mounted RJ45 or custom/3rd party analogue remotes connected to the rear mounted Phoenix connectors.

Configurable: Installer Selectable Modes
Primary + Secondary Mic modes are perfect for controlling hierarchal microphone feeds such as simple paging announcements.

Emergency mode is for use with 3rd party systems in emergency situations and mutes all inputs except MIC 1 on alarm contact closure.

Jukebox mode provides a priority line input to the system for pre-recorded announcements or programme material such as Sports channels.

Remote Control: PL-14 Compatible
The PL-14 is an 'intelligent' remote controller for use with the Allen & Heath GR4 audio zone mixers. It provides the non-technical operator with local control of the music source selection and/or audio level.

Up to two controllers may be connected, just one, one for each zone, or a single unit to simultaneously control both zones. A menu of setup options allows the installer to configure its function to match the specific requirements of each application. Additional switches may be wired for room combining situations and to disable the controller when the settings should not be changed.

The optional PL-5 hand held infra-red remote controller adds wireless control, and additional features including the store and recall of up to 4 source/level pre-sets.

The PL-14 can be mounted into a single unit wall box using the standard face plate provided, or furniture mounted using the cutting template details given here. It interfaces with the GR3/4 using standard CAT5 cables. The second controller daisy chains with the first for convenient single run cabling. Space is provided on the panel for custom labelling.

Allen & Heath GR4 Features

  • 8in/4out Mic/Line Mixer
  • Alarm & Paging Inputs
  • PL remote compatibility with additional analogue remote inputs
  • Primary and Secondary Mic Modes: Perfect for controlling hierarchal microphone feeds such as simple paging announcement
  • Emergency Mic Mode: For use with 3rd party systems in emergency situations. Mute all inputs except MIC 1 on alarm contact closure
  • Juke Box Mode: Provides a priority line input to the system for pre-recorded announcements or programme material such as Sports channels
  • Music fade: option to select next music feed and then unit will fade between sources after short delay
  • Zone lock: Allows select buttons to be disabled for a particular zone. LED corresponding to the button locked will be turned off

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Effortlessly manage your audio with 4 channels, perfect for multi-zone sound distribution.
  • Achieve pristine sound quality for live events and installations with robust preamps.
  • Integrate seamlessly into any rackmount setup, ensuring a professional and tidy workspace.
  • Experience reliable, low-latency performance essential for critical audio applications.
  • Benefit from exceptional build quality, designed for durability in demanding environments.
  • Enjoy versatile input/output options, making this mixer ideal for various audio sources.

What's in the box:

  • Allen & Heath GR4 4-Channel Rackmount Multi-Zone Audio Mixer
  • Power Cable (IEC C13 to Local Mains Connector)
  • 19x Blanking Bung
  • Set of Rack Ears
  • 4x M3x6mm Countersunk Pozi Screws
  • 2x Header Plug Euroblock 2-Pole
  • 2x Header Plug Euroblock 4-Pole
  • 10x Header Plug Euroblock 3-Pole
  • User Manual
  • Allen & Heath 1 Year Limited Warranty