good point, i haven't used the CV out, cuz i don't have any other toys that have CV-in
R99 R66 .. hm.. i guess tweaking those would be similar to the reso-boost mod (which is to reduce the value of R97)
i am trying to figure out why TB-303s seem to have slightly more resonance than strict-spec x0xes
the usual suspects are component tolerances and age, i know many x0x builders might have used 1% resistors all over, while the TB-303 was built with cheap components, probably 5% resistors mostly..
my theory was that maybe they were tweaked with high "5.33V" value (via TM6) and thus more reso and more-strange square wave
but as you now pointed out, that would mean their CV-out would be way off, and i guess that's not quite the case? or is it?
ideally, some volunteers can open up their 303s, measure their 5.33V and say a word or two about the resonance level (or record a small sample)
i found some caps, 0.033uF and 0.015uF (they didn't had 0.018) but socketing those caps in the VCF will be a bit tough for me, as the area there is quite crowded.. i'll see