MATRIXSYNTH: Erica Dtech VCF: Exploring Instability (LMS: Eurorack Expansion Preview)

Saturday, June 03, 2017

Erica Dtech VCF: Exploring Instability (LMS: Eurorack Expansion Preview)

Published on Jun 3, 2017 Learning Modular

"The filter in the classic Russian Polivoks synthesizer is prized for its distortion and occasionally out-of-control resonance. The Eurorack-format Erica Dtech VCF is my personal favorite implementation of the Polivoks filter, including lots of controls, different cutoff curves and resonance responses, as well as a switch between low pass and bandpass operation.

In this movie I explore how to put the filter in and out of instability by manipulating the input level and resonance amount, including using the unusual 'CV Address' control. I spend most of the time in low pass mode, but also explore bandpass toward the end. For more on using the Dtech VCF, see the companion article on the website:

This movie is second of two on the Erica Dtech VCF module from my online course, 'Learning Modular Synthesis: Eurorack Expansion' (available July 2017). For more details including the list of movies and an overview of the course, visit:"

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