Overview

Dual 30 Band Graphic Equaliser

The GQ600 us a precision dual channel 1/3 octave graphic equaliser which provides up to 10dB of boost or cut at 30 centre frequencies between 25Hz and 20kHz. Filter design has been carefully optimised for good interpolation and improved narrow band performance, whilst high quality long-throw 45mm sliders are used for better resolution.

The GQ600 also provides excellent noise and distortion performance, with a flat noise figure of better than-98dBm.

A shelving HF Trim section is provided, with adjustable gain and frequency allowing fast adjustments to be made to overall high frequency response. This obviates the need for system re-voicing when, for example, changes in humidity or audience size occur.

A sweepable high-pass filter offers turnover frequencies of 10Hz to 150Hz and a fixed frequency low-pass filter is also provided for increased H.F. driver protection. This filter is selectable in or out of circuit via jumper links on the main circuit board.

Audio inputs and outputs are provided on lockable XLRs and are fully electronically balanced as standard. Optional transformer balancing is also available for both inputs and outputs.

Additional features include; relay fail-safe bypass, peak level indicators and optional Perspex security cover.

The GQ600 is sturdily constructed from high quality components and undergoes extensive testing and quality control procedures including a minimum 48 hours burn-in period prior to despatch.

Product Details

  • Dual 30 Band Graphic Equaliser
  • HF Trim section with adjustable gain and frequency allows fast adjustments to the overall HF response
  • Optimised filter design for goot interpolation and improved narrow band performance.
  • Excellet noise and distortion performance.
  • Hight quality long throw 45mm faders.
  • Sweepable high-pass filter
  • Electronically balanced input and outputs
  • Peak level indicators
  • Relay fail-safe bypass
  • In/out switch for gain control and EQ section
Input
Inputs
2x electronically balanced
Impedance
> 10k ohms.
CMRR
> 65dB 50Hz - 10kHz.
Output
Outputs
2x electronically balanced.
Source Impedance
< 60 ohms.
Min. Load
600 ohms.
Max. Level
+23dBm into 600 ohm load.
Gain
± 10dB via rotary control.
Frequency Response
± 0.5dB 20Hz - 20kHz with controls "flat".
Equivalent Input Noise
< -98dBm (20-20kHz unweighted) with controls '"flat".
Distortion @ +18dBm
< 0.01% @ 1kHz.
Peak Indicator
Threshold: +20dBu.
HF Trim
Filter Type
2nd order, optimum phase, shelving.
Frequency
2kHz - 20kHz.
Gain
± 8dB max. @ 20kHz.
HF Trim In/Out
Front panel switch with LED indicator.
High-pass Filter
Filter Type
12dB/octave H.P.
Frequency
10Hz - 150Hz.
Low-pass Filter
Filter Type
18dB/octave -3dB @ 27kHz.
- LPF In/Out Link selectable on PCB.
Equaliser Section
Filters
2 x 30, 1/3 octave, 25Hz- 20kHz.
Filter Type
High performance simulated LCR network.
Frequence Tolerance
± 3%.
Gain range
± 10dB.
General
Input connectors
3 pin female XLR.
Output onnectors
3 pin male XLR.
Power
80VAC – 260VAC @ 50/60Hz, < 20W
- Weight 5kg
Dimensions (H x W x D)
133 x 482 x 237 mm, 3U