Compact 6HP VCF for Eurorack Modular synthesizers DIY - PCB AND PANEL ONLY This is a state variable filter with a nice fat sounding low pass output. The two pole filter has simultaneous -12dB per ...Read More…
Compact 6HP VCF for Eurorack Modular synthesizers
DIY - PCB AND PANEL ONLY
This is a state variable filter with 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 three F CV inputs and two Q CV inputs.
There are many weird and wonderul things you can discover with this filter but the provision of the multiple F and Q control voltage inputs means you should plan on a separate attenuator (at least for your envelope output) if you plan to use it for more conventional music.
The videos, courtesy of Randy Piscione, supplement the main demo (also presented below):
The frequency response is exponential at 1Volt/Octave. The Q response is also exponential.
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 low component count project so you can have high quality VCFs in your rack with minimum expense.
Build it yourself - This is a set of one high quality PCB and front panel ONLY for users who want to purchase their own components and build their own module. Some product photos above show COMPLETED build.
This module will fit perfectly into a 6HP Eurorack space.
Comprehensive manuals, parts lists and component shopping carts are provided in the documentation link for building, testing and using the module. (use the Design Files link for version 1.0 of the board please and the Documentation link for the current version (V1.1))
|Shipping Rate||First item||Additional items|
United States Postal Service: First class mail
Automatically upgraded to Priority Mail if you order 2 or more items! Shipped same day or next day and delivered in three business days or less.
United States Postal Service: Priority Mail
Shipped same day or next day and delivered in three business days or less.
Quinn | April 19, 2018
Ken | Jan. 31, 2018
Jason | Jan. 14, 2018
Randy | Dec. 8, 2017
We recognize our top users by making them a Tindarian. Tindarians have access to secret & unreleased features.
We look for the most active & best members of the Tindie community, and invite them to join. There isn't a selection process or form to fill out. The only way to become a Tindarian is by being a nice & active member of the Tindie community!
PMFoundations supplies the PersonalCircuits range of DIY electronics for the modular analog synthesizer enthusiast and musician.