I think (as duncan already pointed out) it's very likely that the missing part in the S/H circuit is a dual FET. The ARP Odyssey used a very similar construction (as far as I can see). Get yourself the ARP Odyssey service manual and have a look at the schematics for board A-I or A-II; the similarity is striking. -- Malte Rogacki gacki@... ---------------------------------------------------------------------------- "Don't forget to TURN ON THE SYNTHESIZER. Often this is the reason why you get no sound out of it." (ARP 2600 Owner's Manual) ----------------------------------------------------------------------------
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[vintagesynthrepair] Re: Info page about the Ace Tone PS1000 Analog Monosynth (1975)
2010-09-16 by Malte Rogacki