24dB Low Pass (Transistor Cascade) Vintage Edition (black front panel)
Module A-120 is a voltage controlled low-pass filter, which filters out the higher parts of the sound spectrum, and lets lower frequencies pass through. The Cut-Off Frequency determines the point at which filtering takes effect. You can control this manually, or by voltage control (filter modulation, for instance by an LFO). Three CV inputs are available, and the sum of the voltages from these affects the filter cut-off.
The module is based on a so-called "transistor ladder" design, with a cut-off slope of -24 dB/octave, as in various Moog synthesizers. That's what gives it its classic, legendary Moog sound.
Resonance (or Emphasis) is adjustable all the way up to self-oscillation - in which case the filter behaves like a sine wave oscillator.
For more detailed information please look at the English user's guide: http://www.doepfer.de/a100man/A120man.pdf
This Module is currently available.$150 Price in € submitted Jan 15th 2016, 17:37 by trenchrun | last Change Oct 7th 2016, 00:18 by acgenerator
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