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BSS Audio DPR-404 Quad compressor De-esser

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Product 186306
Product Price $0.00
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The DPR-404from BSS Audio is a compact and professional 4-channel compressor and de-esser. Based on the well established BSS subtractive gain reducti...Click To Read More About This Product

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With ease of operation and low cost, without sacrificing quality and musicality.

The DPR-404from BSS Audio is a compact and professional 4-channel compressor and de-esser. Based on the well established BSS subtractive gain reduction principle, it offers you four independent channels of high quality, musical compression and high frequency de-essing, with the minimum of operator controls.

Attack and release time constants are automatically and continually regulated by dynamic and harmonic content of program material. The DPR-404 features electronically balanced inputs and outputs. The DPR-404 was designed to be quick and easy to operate by both skilled and novice engineers alike.

  • 30dB of gain reduction using BSS proprietary subtractive approach.
  • Fully adjustable soft knee ratio up to 20:1 hard limit.
  • Automatic adjustment of time constants with two user definable ranges.
  • Output gain adjustment control with LED clip indicator. BSS proprietary
  • activity meter showing below threshold signal level, gain reduction and
  • usable range.
  • Bypass in/out switching with LED indicator. Independent high frequency de-
  • esser threshold control and tuneable filter allows selective de-essing
  • simultaneously with compression.
  • Twin LEDs show de-ess activity.
  • Link switching allows adjacent channels to be linked for accurate stereo
  • working.
  • One DPR-404 can be selected to process two stereo channels, or one stereo
  • channel and two independent mono channels, or four independent mono
  • channels.
  • Compressor side chain insert on rear panel 1/4" RTS jack.
  • Electronically balanced inputs and outputs with optional transformer
  • balancing.
Input Section
  • Impedance: Balanced 12k ohm differential
  • Max. Input Level: + 20dBv
  • CMRR: better than 50dB, 20Hz to 20Khz
  • Connector: XLR331 or equivalent
Output Section
  • Impedance: Balanced and floating to drive 600 ohm loads.
  • Max. Output Level: +20dBv into 600 Ohm load.
  • Connector: XLR332 or equivalent.
System Performance
  • Frequency Response: + 1DB, 20Khz, ultrasonic low pass filter 3db at 32kHz.
  • Noise: Measured to CCIR 4682, <-86dBv.
    Distortion: THD <0.05%, 20Hz to 20kHz.
    SMPTE IM: <0.02%.
    Crosstalk: <90dB, 20Hz to 20kHz.
Operating Controls
  • De-ess Frequency: Variable from 10kHz to 10kHz, dynamic HF shelf turnover frequency.
  • De-ess Threshold: Variable from +20dBv to 30dBv, independent of compressor/limiter settings
  • Threshold: Variable between +20dBv and 30dBv
  • Ratio: Variable from 1:1 to infinity:1 (LIMIT) progressive soft to hard knee characteristic
  • Attack: Program dependent, auto time constant. Nominal 200microsec (30 microsec FAST) for 10% response, and nominal 2ms (300 microsec FAST) for 63% response.
  • Release: Program dependant, 2 part auto time constant. Nominal 10ms (2ms FAST) to 63% recovery after 4ms overdrive 10db above threshold, and nominal 1s (300ms FAST) to 63% recovery after 40ms overdrive 10dB above threshold.
  • Gain: Variable from 20dB to +20dB
  • Link: Stereo linkable in pairs 1/2 and 3/4 Channels 1 and 3 become masters
  • Gain Reducton: 8 point LED display showing progressive gain reduction from right to left calibrated in dB's.
  • Below Threshold: 5 points LED display showing sidechain level below and up to threshold.
  • Clip: Single LED showing onset of channel clip.
  • Size: 482mm x 44mm x 282mm (19" x 1.75" x 11").
  • Weight: 5kg (11lbs) gross shippin
  • Electricity Supply: Switched 120/240V +10% 20% 50/60Hz

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