CS filters cannot self-oscillate; they are wired with external feedback limiting on the resonance control VCAs inside the IG00156s. You might be hearing chorus unit clock noise. Or a noisy FET somewhere leaking a VCO signal. My CS80s are noisy in this regard, probably due to age more than anything. --Crow On 5/23/2013 3:14 PM, pyjamagroove wrote: > If I go to the panel mode (both channels) and turn all VCOS, noise and sine off, both VCF up -then I put overall brilliance and keyboard control brilliance up and press like 6 or more keys at the same time, I hear high sine sound and actually a little VCO in the background and some noise clipping while pressing those keys. I\ufffdve noticed this playing presets like brass with all the brilliance up. Do you guys have the same effect or there is something wrong with my CS80?
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Re: [yamahacs80] Is CS80 actually self-oscillating or I have another problem?
2013-05-23 by The Old Crow