BEFACO BF-22 SALLEN KEY FILTER MODULE sennheiser •VCF EG Amount – Bi-polar

•VCF EG Amount – Bi-polar control sets the (+) or (-) Amount of Envelope Generator modulation of the VCF

Transformer isolation adds the benefit of eliminating ground loops that cause audio hum and buzz and video hum bars or snow

motorized faders and 16 digital scribble-strip displays

Controls and a microphone are also built into the headphones themselves for taking calls

BEFACO BF-22 SALLEN KEY FILTER MODULE sennheiser •VCF EG Amount – Bi-polarThe BF 22 VCF is a dual Hi Low pass filter inspired by the Sallen Key filter from the early MS 20. FEATURES The module features attenuverters (inverter attenuators) as an addition to the normal CV control for Cut off and Resonance, and offers a little more presence in the Resonance than the original. The CV control for Cut off keeps tracking through 3 octaves. The Link switch connects the input of the second unit into the output of the first.