Dual Voltage Controlled Filter

The uHC is a dual state-variable VCF with all CV inputs of the first filter normaled to filter 2. The uHC can be used as a 4 pole filter, two independent 2 pole filters, or some combination in between. A voltage controlled mixer blends the two ouputs, providing another dimension of waveshaping. Filter 2 can use one of the following as its input: the output of Filter 1 (series), the input of Filter 1 (parallel) or it's own input (split). Voltage control of Frequency and Resonance is provided for each filter section. Signal paths for audio and CV are shown with arrows to speed up patching.

Inputs
• In 1 A
• In 1 B
• In 2 A
• 1 Volt/Octave
• CV of Filter Frequency (1, 2)
• CV of Filter Resonance (1, 2)

Outputs
• Out (1, 2)
• Mix Out
• Notch Out

Controls
• Filter Frequency (1, 2)
• Filter Resonance (1, 2)
• Mix
• Input Attenuation (1, 2)
• CV Attenuation of Filter Frequency (1, 2)
• CV Attenuation of Filter Resonance (1, 2)
• CV Attenuation of Mix
• Series/Parallel (switch)

In the Box
• The module itself
• Eurorack Cable