Description
3 output analogue zone mixer. A massive 24 inputs and 3 zone outputs in a little 1U rackmount mixer!

Guide Prices
(Prices from March 2002 price list. Prices exclude tax and are given for reference only. We are not able to advise on prices for used products).
GR1 - £645.68

Downloads
User guide - 898KB pdf
Brochure - 244KB pdf
Architects Specification - 2KB txt
Block Diagram - 188KB pdf
Front Panel Diagram - 148KB pdf
SysLink Applications Guide - 188KB pdf

Key Features

• 6 Inputs - 6 balanced XLR with internal gain trimmer. Internal jumpers provide 20dB attenuator pad, +48V power and HPF @ 70Hz. Pk signal led
• Mono + Stereo Line Inputs - External aux inputs and 2 mono / 3 stereo balanced line inputs are selected by 3-position front panel switch. Internal jumpers set line level -10dBV/0dBu/ +4dBu
• Channel Direct Outs - Line level unbalanced configurable pre or post CH level. Appears on Sys-Link connector
• Controls - Each of the 6 channels and the main L, R, & M outputs are fed through high performance VCA circuits. These are controlled individually by the front panel controls or by remote DC voltages. The channels also have pan controls
• 3 Outputs - XLR. Internal jumpers for levels from -10dBV to +4dBu, plus ground lift. 3 segment led meter. Configurable as stereo + mono or 3 zones. Outputs are duplicated on the expander / remote connector
• Remote Control - VCA path remote control can be configured by the installer. Remote 25-pin D-type female connector includes remote DC input for each of the 6 inputs and 3 outputs
• Compressor Limiters - On L, R, & M outputs options for compression ratio, stereo link, sidechain source, threshold trim
• Priority Ducking - Flexible system allows one or a combination of channels 1-3 to override the others. Front panel priority buttons select status. Internal jumpers adjust depth and release time & bypass
• SysLink Expander - Additional input channels and outputs can be provided by linking together GR1's using the 15-pin D-type connectors. Up to 128 inputs and outputs are possible
• Alarm Override - Comprehensive feature on mic6 or syslink alarm inputs; opto-coupled remote control circuit switches 3 main outputs to the assigned alarm audio source. Test facility & front panel alarm indicator
• Monitoring - Front panel headphone output and level control with selector for L-R / Mono. Alarm and limiter active leds provided
• PSU - Internal mains voltage PSU. DC backup input is provided

0dBu = 0.775 Volts rms, +4dBu = 1.23V rms, 0dBV = 1 Volt rms, -10dBV = 316mV rms
Maximum output level
Balanced +28dBu into 600 ohms
Unbalanced +21dBu into 2k ohms

Internal headroom
+23dBu

Frequency response
20Hz to 30kHz +/-1dB

DistortionTHD+noise measured at +14dBu 1kHz
< 0.04%

Crosstalkmeasured at 1kHz
Channel shutoff < -90dB
Channel pan < -75dB
Interchannel < -80dB

PeakLED
Turns on 5dB before clipping

Noise 22Hz - 22kHz referred to 150 ohm source
Mic EIN -128dB
Line preamp at 0dB gain -90dBu
Mix noise (all routed) < -80dBu

MetersIndividual bargraphs for L,R,M outputs
Peak: on 5dB before clipping
0dB Signal: dynamic indication from -20dB

Ducking
Release fast or slow links
Depth -6, -12 or 18dB links
Control from channel 1, 2 & 3 priority switches
Individual channel ducking to disable links
Compression/Limiters L,R,M, idividually controlled
Ratio: 2:1 soft compression link 4:1 hard compression link

Power Supply - internally regulated +/- 16V
+48V DC phantom power
Mains Power Internal unit
AC mains input 100 to 240V AC @ 50/60Hz
Internally wired to country voltage
Main Fuse Rating 100-120V AC use T630mA 20mm
220-240V AC use T315mA 20mm
DC Power Backup Ex. DC power supply or batteries
+/-12V to 16 V DC @ 300mA
+12V to +48V DC for phantom power