MATRIXSYNTH: DIY analogue synthesizer jam

Tuesday, October 15, 2019

DIY analogue synthesizer jam

Published on Oct 14, 2019 SpamSundays

"Here's a project that I've been working on for a long time now. It has two AS3340 based VCOs, outputting either ramp or square wavefroms that can be mixed together the latter of which having a pulse width control knob, which can be modulated as well.

Other circuits include a simple VCA and an envelope with attack and decay controls, a resonant VCF and an LFO with sine, triangle and square waves. I also included a real tube distortion running at 120 volts B+ (non of that starved plate BS) to add some more harmonics to the sound. As a final touch I added a third 555 oscillator which can hard sync both VCOs for some more fun.

PWM, filter cutoff and the hard sync oscillator all can be modulated to make some absolutely crazy sounds.

Here's a patch I threw together with the Korg SQ-1 and some reverb coming from the Zoom MS70-CDR.


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