Manufacturer: Nrgzr78

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  • QUAD ADSR is a four-fold ADSR type envelope generator based on Doepfer's Quad ADSR.
  • It is sold individually and as part of QUAD BUNDLE.
  • The module contains 4 independent ADSR-type envelope generators.
  • Each sub-module has available the controls Attack, Decay, Sustain and Release.
  • Switches at the bottom left to change attack curve for each envelope from Logarithmic to Exponential.
  • The three-position Range switch allows to select the desired time range (low - high - medium).
  • The adjustable envelope time ranges from several minutes to some milliseconds.
  • On top of this each sub-module is equipped with three digital outputs (high/low): "End of Attack (EOA)", "End of Decay (EOD)" and "End of Release (EOR)".
  • As soon as the criterion is valid (e.g. end of decay state) the corresponding digital outputs turns to "high".
  • In addition to the obligatory Gate (G) input for envelope generators each sub-module has available a Retrigger (Rt) input.
  • The retrigger turns the direction to "upward" if the envelope has already reached the decay state while the retrigger pulse occurs.
  • If the envelope is still in the attack phase the retrigger input has no meaning.
  • The Gate inputs of the units 2, 3 and 4 are normalled to the Gate input of unit 1, i.e. Gate input 1 is connected to the switching contacts of the Gate input sockets 2, 3 and 4.
  • Thus one Gate signal applied to Gate input 1 can be used to trigger all four sub-modules simultaneously.
  • As soon as a plug is inserted into the gate input 2, 3 or 4 the default connection is interrupted for the unit in question.
  • The retrigger inputs are not normalled.
  • The envelope outputs are displayed with LEDs.
  • The maximal envelope voltage (Attack/Decay reversal point) is about +8V.

Title of Song

  • QUAD ADSR_Demo1.wav