Doepfer A-120 Vintage Edition
24 dB Low Pass 1 (VCF1)Module A-120 is a voltage-controlled 24 dB low-pass filter, which filters out the high frequency components from a sound spectrum while allowing the low frequencies to pass unhindered. The cut-off frequency (corner frequency) determines the point at which this effect occurs. They can be set or modulated both manually and via control voltages (filter modulation, with an LFO for example).
The VCF1 is configured as a "transistor cascade" with an edge slope of -24 dB / octave, which is also used in various Moog synthesisers, This results in the typical, "legendary" Moog sound. The resonance (emphasis) can be adjusted at the VCF 1 up to self-oscillation. In this case, the filter operates as a sinusoidal oscillator.
- Vintage edition with black front panel
- Voltage-controlled 24 dB low-pass filter
- Black front panel
- Width: 8TE / 40.3 mm
- Depth: 65 mm (measured from the back of the front panel)
- Power requirements: 30mA (12V) / -20mA (-12V)