70's Moog Repair or Forum

The Moog Forum Moog Music General Topics Forum
1

I have a moog prodigy that has a small issue.

Anyone know of any moog repair forum i could ask some questions?

anyways.. this is 'probally the wrong place to ask this but heres my issue.

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my moog makes a single pop/crackle sound when i press the key down.. one for the key press and one for the release, it goes away when i turn the decay/release and sustain pot to 1 msec but if i turn it right at all it reapears//

this pop/crackle is evident even when the vcf/cutoff is turned all the way left so no vco tone is present, im just left with a pop.. which is annoying when I’m trying to get soft sounds.. of course u cant hear it when i have it on a square setting and the vcf is all the way open.

thanks for any responses.

Dusty Brown
www.myspace.com/dustybrown

2

Your VCA needs calibration. There is a trimpot for adjusting the VCA Balance, if this is out of calibration then you will get control voltage feedthrough which manifests itself as snaps/crackles in the audio output of the VCA, even if the VCF is all the way down and you have no VCOs or noise going through it..