Discussion about the Korg PolySix synthesizer

Hi everyone,

some observations and questions and stuff.

Is it common knowledge that the "old" KLM-367 came in different revisions?
I have one here that looks slightly different than most others I have seen.
Most notably it has nearly all chips socketed (except the opamps); there
are also some "piggyback" components (like resistors) that are soldered
onto other components (though I don't know if this may have happened
afterwards). And finally the PW/PWM testpoint is at a different location.
There may be other differences but I didn't look too hard yet.

One of the new 367's from the groupbuy is almost finished here.

I got most of the parts from Reichelt (www.reichelt.de); except the 0.6W
metal film resistors (they don't stock those values) and the 22M carbon
film resistor. I'll be getting those from Conrad instead (www.conrad.de)
and I'll transplant some of the other parts (LM13600, RAM, processor,
resonator, thermistor...).

The parts list gives C9 and C24 as Mylar caps; however on the old boards
that I've seen so far those are plain film caps like the others. Any ideas
about this?

Thanks and best regards,

Malte