C101 OTA LPF

Four pole low pass filter ( 24db/octave ) based on four cascade OTA-stages.

This module has been discontinued you can find the new version here :
https://www.modulargrid.net/d/corsynth-c101-ota-lowpass-filter-mkii

The design is similar to the one found in classic synthesizers like Roland System 700, Roland System 100m, Roland SH-1, SH-7, SH-101, Roland Jupiter 8, Jen SX1000 and many more.

When the Resonance control is set at a high value the filter will start to oscillate and the C101 can be used as a sine wave VCO. The filter will track perfectly over at least 5-6 octaves and is also temperature compensated.

In many 4-pole low pass filters the output volume drastically drops when the resonance is increased. The C101 OTA Lowpass filter is specially designed to maintain a constant output level at any resonance value ( with the exception of when the filter is set to auto-oscillation ).

Another important feature is that the C101 has voltage controlled resonance.

More Info / Order

https://corsynth.com/home/modules/discontinued/c101-filter