DOEPFER A-136 DISTORTION - WAVESHAPER

DOEPFER A-136 DISTORTION - WAVESHAPER

DOEPFER A-136 DISTORTION - WAVESHAPER

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Module A-136 is a distortion and waveshaping module with extensive control possibilities. The incoming audio or cv signal is internally divided into 3 sections:
  • positive component of the signal with adjustable clipping level (even externally via jack socket) and positive or negative amplification (+/-) of this component
  • negative component of the signal with adjustable clipping level (even externally via jack socket) and positive or negative amplification (+/-) of this component
  • original signal with positive or negative amplification (+/-)

Different settings of 5 distortion/waveshaping parameters enable a lot of very complex and extreme waveform modifications. The range of modifications reaches from simple soft or hard clipping to completely altered waveforms where the original signal is no longer recognizable.
The sketch below shows only a few examples when using a triangle as input signal.

Applications:Ā audio distortion (especially in combination with filters very interesting), waveform modification for audio signals as well as for control voltages (LFO, ADSR, random etc.).

Inputs: audio/CV in, ext. Clipping-Level (+), ext. Clipping-Level (-)
Output: audio/CV out

For more detailed information please look at the English user's manualĀ A136_man.pdf.

Note 1: For signals beyond 7Vss level the internal pre-amplifier has to be bypassed (e.g. LFO or unfiltered VCO signals). Otherwise clipping occurs before the signal processing takes place. Details how to modify the module are available on theĀ A-100 DIY page.

Note 2: Because of mechanical tolerances of the potentiometers and knobs the knob positions may vary a bit from the front panel printing (e.g. "0" is not always exactly the neutral position for "A", "+A" or "-A" with zero amplifiaction).

a136wave.gif (3457 Byte)

Klangbeispiele unseres Kunden Andreas Krebs / sound examples by our customer Andreas Krebs:
http://blog.andreaskrebs.de/2010/08/07/doepfer-a-136-distortionwaveshaper-example/

Breite/Width: 8 TE / 8 HP / 40.3 mm
Tiefe/Depth: 45 mm (gemessen an RĆ¼ckseite der Frontplatte / measured from the rear side of the front panel)
Strombedarf/Current: 30 mA
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