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DoepferA-114 Ring Modulator

4hp
$99.00

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Doepfer A-114

Module A-114 contains two separate ring modulators. A ring modulator outputs the product (Multiplication X • Y) of the signals at inputs X and Y. It's similar to a VCA, but whereas a VCA only responds to positive voltages at the inputs (2-quadrant multiplication), the ring modulator responds to both positive and negative voltages (4-quadrant multiplication).The ring modulator thus provides a refinement of amplitude modulation (AM). Ordinary amplitude modulation will output the original carrier frequency fC as well as the two side bands (fC - fM, fC + fM) for each of the spectral components of the carrier and modulation signals - but ring modulation cancels out the carrier frequencies, and just lets the side-bands pass to the output (see Fig. 1).

A ring modulator is used for the production of bell-like sounds, alien voices, or just to produce new timbres.

A-114 Features

  • Dual ring mod for classic synthesizer timbres
  • Doubles as a dual VCA when fed only positive modulation signals
  • Compact Size!
  • Eurorack Module
  • Width: 4HP
  • Depth: 40mm
  • Current Draw: 40mA
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