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

Hello, I've been lurking on the list for a few months and I finally scored a CS-50 locally. It is in pretty good shape but is having some minor issues. I'm hoping some experts on the list could give me some pointers on.

First, the post VCF sine works on all 4 voices but they seem to be at quite different volumes. Two are noticeably lower than the rest making the feature pretty unusable. I'm hoping it is just a calibration issue.

The other thing is the PWM is behaving a bit odd. The rate slider works as expected but shape of the modulator does not sound smooth.. almost like a cross between a sawtooth and square. It has a jumpy feel to it. It seems to sound normal with the depth from 0-20% of the slider range but does not provide the lush chorusing effect you would expect beyond that.

Finally one voice seems to have a small amount of portamento applied to it even with the portamento slider all the way down. It is definitely playable and sounds great but I'd like to get it back in tip top shape. Thanks for any advice.