Wavetable Polysynth in a Crumar Stratus case

This massive old chunk of technology started out as a dead Crumar Stratus that I picked up cheap, I repaired all the filter boards etc and it was fine but boring.

So I had the crazy idea to replace the organ based tone generators with a VCO of some sort. I settled on the Electric Druid VCDO1 which is a wavetable 8 bit oscillator with a main 16 wave table and a 32 wave sub.

After a lot of messing around I decided to rip everything out and start again. New oscillator boards, new multi pole filters, a new LFO and new env generators.

It has 999 memories, dual VCDO per voice, 24 dB multi pole filters and a 16 wave LFO, 3 env gens per voice for pitch, filter and amp with velocity available on each.





8 Likes

Very impressive build and it sounds good as well!

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Thanks, this is one of my longest ongoing projects and I’ve used it as a learning platform. Never used Arduino or Teensy in anything before.

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