Build Mods

So as I'm about to start soldering this thing together I went back through the forum and collected the undocumented suggestions that Todd had for the build. Thought I'd save someone the trouble of searching through again.

  • Replace C12 with a 1000uF capacitor, in order to reduce
    power noise

http://www.narrat1ve.com/forum/discussion/315/wtpa2-noise-floor-and-supplies

  • ADD – 1k to 10k + resistor from pin 7 of OK1 (6N138) to pin
    5 (ground) for MIDI reliability.

http://www.narrat1ve.com/forum/discussion/317/interesting-wtpa2-midi-opto-repair

  • For 5v Mod: Replace R56 and R57 with 10k-22K (18k?)
    resistors to make fine control fine again

http://www.narrat1ve.com/forum/discussion/312/wtpa2-0-5v-cv-mod-advice


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