The GRQ3121 from Sabine combines eight audio products into a single affordable, all-digital package with an easy-to-use hands-on interface. Virtually all installation or live audio issues can be dealt with, without running out of DSP power.
All processors can be run concurrently. Control of the thirty-one band graphic EQ can be handled both from the front panel as well as by remote computer control. Additional EQ is available via software control and the twelve filters can be configured as either parametric filters or fixed/auto feedback control filters.
A digital limiter provides speaker protection and a digital compressor, with full function control, delivers audio program processing. A 1 x 2 crossover set-up features multiple filter profiles while a digital delay can be set up to time aligns speakers.
Included GRQ2 Remote Control Software provides instant access to all front panel controls and to an additional layer of functions. The engineer can view and edit frequency response curves, view edits before executing them and take advantage of unlimited GRQ2 file storage.
Complete digital processor for live sound and large installation
31-band digital graphic EQ with variable bandwidth
Bessel, Butterworth and Linkwitz Reily crossover filters with slopes up to 48dB/octave (software controllable only)
High and low cut filters
Compressor/limiter, with controls for ratio, threshold and gain (attack, release and knee adjustable with remote)
Digital delay with up to 1 second delay, adjustable in 20 microsecond increments
Up to twelve filters, configurable as either FBX feedback filters or parametric filters
The twelve feedback filters have dual setup modes (auto setup mode via remote control)
Parametric filters can have either numeric or graphic control (via software only)
Dedicated bypass switches for FBX, EQ and Delay with built in LED indicators
Remote Windows software can control all front panel controls in addition to controlling the twelve FBX/parametric filters, graphic EQ filter width adjustments, password protection and view and edit frequency response curves
RS-232 serial input and output
Future-proof free Flash RAM upgrade capability
Number of Channels
1 x XLR 1 x 1/4" TRS phone
2 x XLR 2 x 1/4" TRS phone
Maximum Input Level
31 on 1/3 octave ISO center frequencies
0.5 to 1.0 octave in .01 octave increments
+/-6dB or +/-12dB, selectable
+32dBV to -30dBV peak in 0.5dB steps
1:1 through infinity with variable soft/hard knee
1 to 99mSec in 1mSec steps
0.05 to 5 sec in 0.05 sec steps
Maximum Output Level
20Hz to 20kHz, +/-0.2dB @ +18dBV
19" x 9 1/2" x 1 3/4"
Programmable high and low pass filters Programmable delay up to 1 second Programmable feedback filters 1 x 2 crossover