If you have a SA-1 with both these mods then I urge you to build a LFO with a 555 and DIY Vactrol and then run the (+) side of SA-1's audio through the light dependant resistor side of the vactrol before connecting it to the speaker or jack
So one of the legs from the LDR would go to the + wire and the other would go to the speaker?
Fussing around with my SA-1, trying unsuccesfully to remember the specifics of the above technique, I found that if you put the LDR across the two terminals on the djsynchro noise pot you can get a pulse effect. The flash of the LED triggers the distortion. Probably not worth building a new oscillator for, but if you have one just kicking around it opens up another option.
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