Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

Hi Folks,

Some of you may know that I've replaced the keybed on my Polysix. The new keybed has a long metal cross-bar that sits a little lower than the one on the stock keybed. The new keybed is running into the tall 0.047uF Mylar caps that are standing tall from the KLM-366. Specifically, I'm talking about C31-C36 that are the caps that hold up the sample-and-hold output from IC29.

Being too tall, I'm thinking about replacing them. They're listed as 50V Mylar caps. Would it be OK to replace them with 50V ceramics instead? The ceramics are WAY smaller and would allow my new keybed to fit easily.

The signals being held by these caps is only used for the keyboard tracking of the VCF, so it's not like I need a cap with ultimate fidelity. I think that I need a cap that holds its DC value very well (which is the point of the S-H).

Would a ceramic be OK here?

Chip