Korg Poly800/EX800 Users

>After switching out a few parts and adding a knob just to the right of
>the parameter listing, the chorus rate can now be varied from very slow
>to the point of being barely noticable, to annoyingly fast (sounds >almost 
>like a vibrato).

I was thinking that would be possible.  I never had a Mk.1 though or 
schematics...

in theory I think you should be able to add an input, controls for rate and 
depth (rate could go into the audio range), delay (with a really long delay 
it should sound quite grainy), feedback, maybe even a CV input.  that would 
be going a little far for just a chorus circuit but it would sound cool

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