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

Hey gang,

A couple of quick questions for you regarding calibration:

My CS80's main "personality quirk" pertains to the Initial and
Aftertouch functions, and I'm wondering whether adjusting the trimpots
for Aftertouch and Initial Level on the TRG boards might actually
correct this. Bear in mind that both AT and IT seem to behave in the
same way with regards to the bugginess.

Simply put, when I play a percussive/Initial-reliant sound (i.e. E.
Piano on CH I), some voices don't sound:
-If I hold down a key, and cycle through the remaining voices on
another key, Voice 8 is barely audible.
-If I hold down two keys or more and cycle through the remaining
voices, there are now two voices which don't sound--i.e. Voice 8 and a
second (which I've yet to bother trying to identify.)

My Aftertouch was reborn yesterday thanks to my genius albeit
reluctant tech (you know who you are!) and to my mild disappointment
it seems to not function under precisely the same conditions as the
Initial. Engaging a single voice on its own, anywhere on the
keyboard, the AT works beautifully. But if I'm holding down a note or
a chord, the AT fails at predictable intervals.

At first I optimistically supposed that the trimmers for specific
voices on the TRG boards had simply got knocked out of whack somehow,
but now I find it highly suspect that both the AT and IT could be
completely out for the same Voices. Moreover, I find it strange that
the AT/IT sounds properly on 7/8 voices when I'm holding down a single
key, whereas an additional voice seems to fail when I hold down more
than one key... Which to my very limited brain would imply I've got a
bad CMOS chip or something on one of those pesky TSB/TKC boards...

Much obliged for your thoughts and opinions--I basically just want to
know if it's worth my while to fiddle with those trim pots or if I'm
better off just 'playing around the problem' and leaving well enough
alone. (As of this writing I am essentially tech-less so
re-populating those boards is sadly no longer an option.)

Cheers,

Ted