There was only one thing that didn't work as supposed in this build. Sequencer didn't operate correctly in the 3-stage mode (it worked as a 2 step sequence). 4 and 5 step stages worked ok. I changed the 4009 CMOS chip and after that everything worked as supposed!
Complex oscillators coarse slider useful range was only about the first half travel. I made the ModularSynthesis modification and added a 82k series resistor with R45 to reduce the gain of the coarse slider. That fixed this problem.
This build cost me about 2100€. Building was fun and the documentation in ElectricMusicStore, ModularSynthesis, Muff Wiggler and PortaBellabz helped a lot.
This Blog is about electronic music, synthesizers and SDIY. Sigma-music can be found on Bandcamp (http://sigma2.bandcamp.com/), CDBaby and several other web streaming/downloading services.
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