befaco bf-22 sallen key filter v3.3

befaco bf-22 sallen key filter v3.3

befaco bf-22 sallen key filter, kit, euro

This is a dual Hi/Low pass filter. Inspired by the famous sallen key filter from MS-20 early 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