What range of voltage do you get going into the res CV pin on the
NE10400 from that slider?
Crow
/∗∗/
On 11/23/2011 11:10 AM, Quazimodo wrote:
> Hi guys,
>
> I have a question about the CSY-1 transplant I am finishing off. I've been meaning to finally put the lid on this for a year or so now... so I've revisited it. I 'extracted' the synth part from an old CSY-1 organ amd made a cabinet for it so what I have here is basically a three and a half octave SY-1.
>
> It's all working great considering what it has been through...!
>
> Apart that is, from one thing. The filter resonance slider doesn't seem to do much. It does affect the sound but only with an apparent slight volume level difference when I move the control. The frequency slider works fine.
>
> My question is - is this most likely to be the potted low pass VFC unit? On the schematic there doesn't seem a lot around there... just some resistors and one cap, a 4.7mfd which I have change, but it made no difference. Are there any parts of the circuit other than the potted assembly, that I could look at regarding lack of resonance..?
>
> Any help/pointers much appreciated.
> Cheers,
> TOM
>