DPR-901II (discontinued)

Dynamic Equalizer

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The DPR-901 II is a four-band parametric Dynamic Equaliser which allows frequency-selective compression (-3OdB) and expansion (+16dB).

Each band has:

  • A frequency sweep.
  • A bell width.
  • An IN/OUT switch.
  • Compress/expand control.
  • Compress/expand metering.
  • Threshold metering.
  • Time constants which are automatically controlled by dynamic and harmonic content of signal with selectable FAST RELEASE.

It has a filter switch on bands 1&4 which changes bell filter response to a shelving response and on bands 2 & 3 cancels the filter for wide band operation.

Electronically balanced input and output.

The unit may be set up as a 1 input/4band or 2 input / 2 bands per channel device, and the filter side chain may be monitored to allow precise tuning of the audio spectrum to be effected.


  Version Language Size Uploaded
DPR-901II CAD drawing front
en updated: Sep 18, 2021
  en  242 KB Sep 18, 2021
DPR-901II CAD drawing rear
en updated: Sep 18, 2021
  en  36.3 KB Sep 18, 2021
DPR-901II Cut Sheet-English
en updated: Sep 18, 2021
  en  125 KB Sep 18, 2021
DPR-901II Owner's Manual-English
en updated: Sep 18, 2021
  en  519 KB Sep 18, 2021

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