Allen & Heath GR2

The GR2 is a new 1U rack or desk mount 9-input, 4-output, analog zone mixer for demanding but budget-conscious installations requiring sound for live entertainment, paging, background music, conferences, presentations and a diverse range of modern architectural applications. The GR2 offers the installer a host of front panel preset switches and trimmers to meet each special requirement. After installation, the settings are protected by a cover plate and unused controls may be blanked off to keep things simple for non-technical operators. There is a combination of XLR/RCA and screw terminal connectors for pre-wired or plug-and-play installation and extensive remote control capability using standard Cat5 cable.

6 Mic/Line Inputs with EQ
Balanced inputs are provided on terminal blocks for convenient pre-wiring, with Mic 1 duplicated on XLR for quick plug-and-play. Each input has selectable +15V phantom power, protected mic/line pads and gain trimmers. There is a mic priority function for chairman or MC override, and a mic mute. The mic also has dedicated EQ with swept HPF, swept MF and shelving HF. An expander input allows more mics to be added to the mix.

3 (or 4) Stereo Music Inputs
Music channels are provided on RCA inputs with protected -10/+4 level settings. Mic/line 5/6 can be configured as a stereo input providing a 4 mic, 4 stereo line system. Inputs may be configured one at a time, or all together.

Paging & Music Priority Override
GR2 offers a dedicated paging channel with tailored EQ for speech intelligibility. The source can be configured from Mic 1 and/or an external input or alarm message and the zone program is ducked when a page signal is detected. Music 1 may be configured as a priority input for jukebox and pre-recorded message override.

Mono & Stereo Zone Outputs
Outputs are available on both RCA and terminal blocks for pre-wiring or plug-and-play operation. Stereo Zone 1 may be configured for music only or music + mics, and mono Zone 2 can be configured for mics, music or music + mics. VCAs are provided for ducking, alarm override and remote level control. Zone 1 features a 2-band EQ and a mono switch.

Mono Aux Output
A versatile output for additional zone, mic expander, paging distribution, sub bass and more is provided on RCA and terminal block connectors. It is configurable as page out, mic mix, follow Zone 1 or Zone 2, and has a switchable 100Hz LPF for sub-bass feed.

Remote Control
The GR2 uses standard RJ45 CAT5 cable for installation. 'Zone remote' allows remote level and source selection for both zones over a single cable. A 10V DC control input is provided for custom wired switches or potentiometer, third party interface or the Allen & Heath PL-12 wall plate. The PL-5 hand-held IR controller is available for use with the PL-12. 'Utility remote' allows remote mic priority and mute switching, page selection and alarm override.

Configuration Protection
All settings are configured from the front panel. Preset dip switches are letter coded, and trimmers recessed for screwdriver access. A cover plate protects the settings and provides space for fitting a custom label. Any of the rotary knobs may be removed and hole plugs fitted as required.

Specifications

• Mic/Line Input
  Balanced XLR (1), terminals: Pad out = >2k ohm, -60 to -20dBu; Pad in = >10k ohm, -30 to +10dBu
  Phantom Power: +15V DC
• Stereo Input
  Dual RCA Phono: >10k ohm; -10dBV or +4dBu
• Zone Output
  RCA, Z balanced terminals: <75 ohm, 0dBu, +20dBu max
• Expander Input
  Balanced Terminals: >10k ohm, 0dBu
• Page Input
  Balanced Terminals: >10k ohm, 0dBu
• Mic EQ
  HPF 20-400Hz
  MF peak/dip +/-12dB @ 200Hz to 5kHz
  HF +/-12dB 10kHz shelf
• Zone 1 EQ
  LF +/-12dB 80Hz shelf
  HF +/-14dB 10kHz shelf
• Page EQ
  HPF 150Hz, LPF 8kHz
• Remote Control
  Level 0V = off +10V D = max
  Source Select 1=2V, 2=4V, 3=6V, 4=8V
• Ducking
  Signal detect threshold: -20dB
• Music Priority
  Signal Detect Threshold: -20dB
  Release: short = 2 sec, long = 12 sec
• Signal Meters
  2-color LED: signal = -14dBu, peak = +14dBu
• Power Supply: 100 to 230V 47-63Hz AC, universal mains input 25VA max
• Dimensions (W x H x D): 19" x 1.75" x 9.3"
• Weight: 8 lbs