Product Description
Allen & Heath AH-GR4 Rack Mount 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.
Features
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.
- 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.
- 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 MICs2-4 muted for the duration of the announcement. MIC1 zone select LEDs flash slowly when in priority mic mode.
- Gain / volume rotary controls can be removed and capped (caps supplied) to prevent unauthorized use.
INSTALLER SELECTABLE MODES, INCLUDING:
- Primary and secondary mic modes - Perfect for controlling hierarchal 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 program 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
Specs
| 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 |
Please note that this item works with the PL-14.
