MCM Electronics

Dual 31 Band Equalizer with Feedback FinderMCM Part #: 555-15395  |  Applied Research Technology Part #: HQ231

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Pro Dual 31 Band EQ w/ FDC

The HQ231 Dual 31-band Graphic EQ is perfect for any live sound application where there is a high feedback potential including monitor mixes, side-fill cabinets or high powered front-of-house mixes situations.The HQ231 features ART’s proprietary FDC (Feedback Detection Circuit), with constant Q circuitry capable of delivering a 3% center frequency accuracy.

Product Description

Professional features like LED level metering, selectable 6dB or 12dB slider range, active balanced and unbalanced input & output connectors, RFI filters, independent variable Hi Pass (low cut) and Low Pass (high cut) filters, variable input level control, passive bypass switch, clip level indicator, ground lift switch, and selectable line voltage switch make it ideal for any professional application or touring system.

  • FDC Feedback Detection Circuit
  • Dual Channel 31-Band Graphic Equalizer
  • Output Level VU Metering on Each Channel
  • Constant-Q Filtering
  • Individual High and Low Pass Filters on Each Channel
  • Center-Detented Frequency Band Sliders
  • Independent Level and Bypass Controls on Each Channel
  • Relay Bypass - If Power is Lost, Signal Will Still Pass
  • Variable Input Controls
  • Signal Clip Level Indicators
  • Ground Lift Switch
  • Internal Power Supply
  • Selectable Line Voltage
  • Dimensions: 7.5in d x 19.0in w x 3.5in h
  • Filter Type: Constant Q –3% center accuracy
  • Frequency Bands: 2 x 31, 1/3 octave, ISO spacing
  • Frequency Response: 20Hz– 20kHz, +/–0.5dB
  • Indicators: OUTPUT NOISE: –94dBm (unweighted)
  • Input Impedance: 20K ohms typical
  • Input/Output Connections: Active balanced XLR and 1/4in TRS, Unbalanced RCA
  • Maximum Input Level: +22dBm
  • Maximum Output Level: +22dBm
  • Power (Switchable): 95–125 VAC, 50/60Hz, 190–250 VAC, 50Hz
  • Range: +/–6dB or +/–12dB selectable
  • Total Harmonic Distortion: .01% (20Hz–20kHz+10 dBu )
  • Weight: 12 lbs.

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Package Specifications & Dimensions
RoHS Comp:Yes
Warranty:365 days
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Length:0 in.
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Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages

MCM Cat 57, Page 037

MCM Cat 56, Page 197

PDF Reference

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Mfr. Info

Applied Research Technology Logo
Mfr. Name:Applied Research Technology
Mfr. Part Number:HQ231
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