Backend Filter

24db/octave voltage controlled filter

This module comprises of an 3 way audio input mixer, a control voltage input mixer, a 24dB/octave voltage controlled filter with 4 tapped outputs, 2 voltage controlled amplifiers and control envelope generators. bar one 'buffer' IC- the circuits are all discrete transistor, resistor and capacitor based. just like the x-series dual oscillator- the resistors are all half watt carbon types and the capacitors are a mix of ceramic/mylar types. the result of this design is an extremely warm and vibrant module. from the bass end up- the sound is consistently clean but full...this is down to pure discrete transistor design and PCB layout.