Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

OK, I have decided to make a modification of the LFO range, but it
seems like this modification was only mentioned in passing somewhere,
so I will have to be intentive here, and would appreciate any help
from seasoned PolySix modificators.
The idea is to make an alternative frequency range available by
augmenting the LFO speed capacitor with another with a smaller value.
I want to be able to take the LFO into the audio range. Any good
suggestions for an alternative cap value? Maybe 1/10th of the
original cap value is suitable? Could/should an even lower value be
used? I know from the MiniMoog that the faster the modulation
freqency, the wilder it will sound. (My best Mini modulations are
with osc3 in positions 8', and especially 4').

To make this a reversible and switchable modification, I plan to
replace the LFO speed pot with one of the type that has a push-pull
switch inside too, so that by pulling the pot the LFO goes into the
desired FM range, pressing it returns to normal range. This could be
achieved by putting the new small capacitor in series with the
existing one and using the switch to bypass the old capacitor,
leaving only the new smaller one in the line.
Any comments to this. Anything I should be aware of before I do this?

Thanks

Frank Carvalho