The Befaco BF-22 Sallen Key VCF is a dual Hi/Low pass filter, inspired by the famous sallen key filter from early MS-20 version.
It has attenuverters (inverter-attenuator) as an addition to the normal CV control in Cut-Off and CV control for the resonance with a little more presence of the resonance than the original. The normal CV control for Cut-Off keeps tracking trough 3 octaves.
The ‘Link’ switch connects the input of the second into the output of the first to have it in series
Eurorack Compatible
Can be powered with +/-12V or +/-15V without changes.
Current needs: +12V: 40mA -12V: 35mA
Banana or minijack connectors available
Selectable HP/LP mode 6/12 dB
Cutoff and resonance CV controlled.
17 HP / 47 mm depth
Features
Dual-channel Sallen-Key Filter. Inspired by the early MS-20
High and Lowpass operation.
Two CV inputs per channel with a dedicated atenuverter for the first one.
CV controlled resonance.
The first channel can be linked to the second one with the “Link” switch.
Designed, kits prepared and completed modules assembled in Barcelona.
