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sales@emismusic.co.uk

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Doepfer Musikelektonik logo

Analogue  Modular  System  A-100

Width

HP

Depth

mm

Current

mA

Lighning Flash

Owners Manual

12dB/oct Voltage Controlled Filter (muti mode)

The A-121 is a voltage-controlled multi-mode filter with a cut-off slope of -12 dB / octave.
Four simultaneous outputs are available, each with different characteristics: low-pass, band-pass, high-pass and notch (or band reject).

The cut-off frequency determines the point at which the filter starts to work. The frequency can be adjusted manually, or by voltage control (Filter modulation, for instance by an LFO or ADSR). Two CV inputs are available, whose control voltages are summed.

Resonance (Emphasis or Q ) can be adjusted manually, or by voltage control (voltage-controlled resonance / VCQ), right up to self-oscillation, in which case it will behave like a sine wave oscillator.

A-121

12

55

10HP

30

10HP

A-121  

Doepfer A-121 Discontinued