12dB state variable filter with VC cut off and resonanceDesigned by PM Foundations in United States of America
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Summary Compact 6HP VCF for Eurorack Modular synthesizers This is a state variable filter using the same core as our 2Q12 filter but substituting multiple unattenuated F and Q CV inputs with some o...Read More…
Compact 6HP VCF for Eurorack Modular synthesizers
This is a state variable filter using the same core as our 2Q12 filter but substituting multiple unattenuated F and Q CV inputs with some on board attenutaors. Like the 2Q12, this filter has a nice fat sounding low pass output. The two pole filter has simultaneous -12dB per octave roll-off for high pass and low pass and a -12 db wide (-6dB either side) bandpass output. It has voltage control of cutoff frequency (F) and voltage control of resonance (Q). F and Q are adjustable with panel controls and from external sources using two F CV inputs and a Q CV input. One F CV and the Q CV have attenuators.
The videos, courtesy of Randy Piscione, supplement the main demo:
The frequency response is exponential at 1Volt/Octave.
The design uses a positive feedback resonance circuit that maintains a high input signal level as resonance is increased. This enables low noise output regardless of the resonance. The input level control can be used to provide a smooth or clipped high pass output during resonance, further increasing the opportunities for sound experimentation.
This is a PCB and Panel set only. A set of 1 high quality PCB and 1 front panel ONLY are included. You will need to purchase your own components and build your own module. Comprehensive build instructions and BOMs are provided to help you source the components needed and we even provide links to shopping carts to simplify sourcing those components. Some product photos above show COMPLETED build.
Comprehensive documentation, parts lists are provided in the documentation link for building, testing and calibrating the module.
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Shipping times to Europe and Australia/New Zealand are extremely long due to circumstances beyond our control and in some cases can take up to 2 months. Please ask about Priority Shipping if you would like a faster service.
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