Archive of the former Yahoo!Groups mailing list: Yamaha CS80

Hi guys....how can it be possible that nobody here can speculate anything about this expression circuit??

OK, there is this famous 3rd filter into the EXP circuit, it's made of a couple of 3dB lopass filters forming a 1pole lowpass for a gentle filtering; I don't know why the low notes sound filtered and the high notes have not this impression, why if you slide down with the ribbon you plainly get an effect of tracking even if you aren't applying any key tracking, why if you put in some resonance into the master fitlers, this effect retains part of this resonance.....
Guys, anybody can give me a little hand or address me wherever I can get these infos??
Please help!!!
Max

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