VCO-1C #2

[jhaible]

> If you really are serious about this. Look at the VCO-3A 
> again. I used it in the MM and Mini4. After considering 
> your idea a little more, I think this might actually be 
> a solution. 
> 
> Temp-stability is good. It would still require at least a tempco 
> and maybe 3046s if you were going to gang them up.
> 
> This is (no offence...really) a pretty nutty idea. Having only 12/16 
> CEM3340s in a poly they used a cpu to keep 'em almost in tune, some 
> of the time, and those were Curtis chips.  

No, no, no - as I said, I would build *linear* VCOs and nothing else.
Why fooling around with expo converters when each VCO is dedicated
to one note on the keyboard anyway ?
(My question was about the stability of the VCO *core*, not the expo 
converter.)
And speaking of polysynths, my CS-50 is perfectly in tune for a year 
or more, without the need of any autotune, and even without touching
the Manual Fine Tune Knob ! (And I bet a CS-80 wouldn't be much worse
if it wouldn't produce that much heat on its own !)

JH.