Befaco BF-22 Sallen Key VCF v3.3

Befaco BF-22 Sallen Key VCF v3.3

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.