Allen & Heath GR4 Rack Mount Zone Mixer

Allen & Heath GR4


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

 

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