24dB VCF Lowpass

The circuit uses a classic 4th order transistor ladder filter core which gives a steep 24dB/octave cut slope. With enough resonance amount the filter will resonate by itself. The use of a VCA in the circuits feedback path adds voltage controllable resonance, which gives more possibilities in modulating the sounds. The amount of the FREQ CV and Q CV inputs can be attenuated onboard.

Tunable parameters:

• FREQUENCY
• FREQ CV AMT
• Q
• Q CV AMT

Inputs:

• FREQ CV IN
• Q CV IN
• SIGNAL IN

Outputs:

• SIGNAL OUT

Power:

• +12V 14mA / -12V 12mA

Dimensions:

• Width: 12TE (60.6mm)
• Depth: 13mm