Discussion about the Korg PolySix synthesizer group photo

Yahoo Groups archive

Discussion about the Korg PolySix synthesizer

Archive for polysix.

Index last updated: 2026-03-30 01:17 UTC

Thread

VCF RESONANCE ADJUSTMENT QUESTION

VCF RESONANCE ADJUSTMENT QUESTION

2016-07-15 by jw_dewdney@yahoo.com

so... just going through a tune up (sounds better tuned already after doing the resonance offsets)... and am a bit confused about which trimmer to use. For CN05-11 it says to use the vcf res trimmer but for CN05-7 it just says 'adjust'... ro 0.00v ... does anyone have a clue what im supposed to ne adjusting here?? thanks much.

Re: [PolySix] VCF RESONANCE ADJUSTMENT QUESTION

2016-07-15 by Bob Grieb

I think you set CN05-7 to 0V using the cutoff knob on the front panel.
Someone wrote that as a comment on my copy of the serv man and
I have done it that way.


--------------------------------------------
On Fri, 7/15/16, jw_dewdney@yahoo.com [PolySix] <PolySix@yahoogroups.com> wrote:

Subject: [PolySix] VCF RESONANCE ADJUSTMENT QUESTION
To: PolySix@yahoogroups.com
Date: Friday, July 15, 2016, 4:44 AM


so... just going through a tune up
(sounds better tuned already after doing the resonance
offsets)... and am a bit confused about which trimmer to
use. For CN05-11 it says to use the vcf res trimmer but for
CN05-7 it just says 'adjust'... ro 0.00v ... does
anyone have a clue what im supposed to ne adjusting here??
thanks much.

Re: [PolySix] VCF RESONANCE ADJUSTMENT QUESTION

2016-07-16 by jw_dewdney@yahoo.com

weird...! I'm getting NO CHANGE from adjusting the cutoff knob at all. I DO get change when rotating the RES knob (front panel) clockwise... the lowest value i get off the test point indicated (presumably CN05-7) is 113-114 mv and it goes all the way up to 10v. But cutoff... no.

is it possible i have the wrong test point? or the sign of something deeper maybe?