Allen & Heath Rack Mount Zone Mixer | AH-GR4

Description

Allen & Heath GR4 Audio Mixer

The Allen & Heath GR4 is a versatile, single rackmount or desktop audio mixer designed for paging and background music control in a variety of commercial settings, such as restaurants, bars, stores, and retail or leisure environments. It features multiple microphone and stereo input options, making it highly flexible for integrating different audio sources. The GR4 includes four mic inputs and four stereo inputs, with individual control over the mix for two separate zones. It also offers two zone outputs and two additional mono outputs. The unit supports different operational modes, including emergency mic mode and jukebox mode, making it an ideal choice for locations that need reliable, user-friendly audio management.

Features

• Four Mic Inputs: Four rear panel Phoenix mic inputs and an optional front panel XLR input for Mic 1.
• Stereo Audio Inputs: Four pairs of stereo RCA inputs, plus a 1/8" stereo aux input for additional playback devices.
• Four Zone Outputs: Two stereo zone outputs, with the option to configure them as mono via internal jumpers. Additional two mono outputs available (Zones 3 & 4).
• Gain & EQ Controls: Individual gain and 2-band EQ for each mic input and zone outputs for tailored sound.
• Primary & Secondary Mic Modes: For versatile usage scenarios, including emergency announcements.
• Emergency & Juke Box Modes: Special modes for priority messaging and background music control.
• Rackmountable Design: Includes rack ears, mounting hardware, and Phoenix connectors for easy installation.
• PL-14 Remote Control Compatibility: Optional remote control for additional source selection and volume control via Cat5e cable.

Specifications

Microphone Inputs

• Sensitivity (Gain = Min): 0 dBu
• Sensitivity (Gain = Max): -50 dBu
• Max Mic Level Control: +5 dB
• Min Mic Level Control: -80 dB
• HPF (High Pass Filter): 150 Hz
• EQ: LF: ±15 dB @ 80 Hz, HF: ±15 dB @ 8 kHz
• Frequency Response: 20 Hz – 20 kHz ±1 dB
• THD+n @ 0 dBu in 1 kHz: 0.004% (22 Hz - 22 kHz)
• THD+n @ -30 dBu (Gain = 30 dB): 0.005% (22 Hz - 22 kHz)
• Clip Level (Unity Gain): +21 dBu

Stereo Inputs

• Input Sensitivity (Gain Link OFF): 0 dBu
• Input Sensitivity (Gain Link ON): -10 dBu
• Max Level Control: +6 dB
• Min Level Control: -76 dB
• Frequency Response: 20 Hz – 20 kHz ±0.5 dB
• THD+n @ -10 dBu in 1 kHz: 0.015% (22 Hz - 22 kHz)
• THD+n @ 0 dBu in 1 kHz: 0.035% (22 Hz - 22 kHz)
• Crosstalk from Unselected Channel: -75 dB @ 1 kHz

Zone Outputs

• 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 @ 80 Hz
• Main Zone EQ HF: ±15 dB @ 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: -88 dBu (22 Hz - 22 kHz)
• Mic Input Routed at Max Gain: -77 dBu (22 Hz - 22 kHz, 150 Ω source)

Power

• Power Supply: 100 - 240 VAC, 50/60 Hz
• Power Consumption: 15 W (without remote attached)
• Max Power Consumption: 20 W

Physical Dimensions

• Dimensions (WxHxD): 9.5 x 1.9 x 17.2" / 242 x 48 x 438 mm
• Weight: 7.5 lb / 3.4 kg

In the Box

• GR4 Mixer
• Power Cord
• Blanking Bung Covers
• Rack Ears & Mounting Hardware
• Four Countersunk Pozi Screws
• 14 Phoenix Connectors