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https://www.experimentalistsanonymous.c … 20Shifters will just order some of those chips & make some pedal for myself… found then on ebay DOD FX13 Gonk is MC1496… The original EHX Frequency Analyzer sounds so much better… yet neither have EXT VCO input … Continue reading →

for reference since the page in my service manual PDF is blurry on trimpot set screw numbers…

Many years ago, Sam(Osamu) Hoshuyama did post on the SDY list a series of designs of his of a basic modular synth all based on CMOS circuits. You can find it al here : http://www5b.biglobe.ne.jp/~houshu/synth/index.html

t_8038_sine_square_triangle_generator_v2_159.png (120.49 KiB) Viewed 17 times

https://sdiy.info/wiki/CGS_twin_CMOS_filter