Oscillator 1 pitch not tracking keyboard correctly

[molotov]

Hello! I'm wondering if anyone out there has had this problem or might help me solve it..

Basically, the pitch of my Voyager's oscillator 1 doesn't track the keyboard (or incoming midi) correctly anymore. When I play a 'C' note, each octave higher it gets a little sharper, until by C4 it's at least whole tone out of tune :/ I've tested with the other oscillators and they still track perfectly.

Anyone know if there's a fix for this? maybe an internal pot I can adjust while looking at a spectrum analyser? I'd rather not have to send it off somewhere and pay £££ for what could be a simple-ish solution!

Anyway, any suggestions would be gratefully received,

cheers,
Luke

[thealien666]

The stretch tuning (scaling) of Osc #1 has become misadjusted.

The procedure to recalibrate the Voyager's oscillators is rather involved, and time consuming. Also, the trimpots involved are extremely sensitive, and interactive. You need a musical instrument tuner, or frequency meter (not a spectrum analyzer) in order to calibrated it properly.

Work best left to professionals (that will offer a warranty on their work). But if you want to risk trying to recalibrate it yourself (out of warranty of course), here's a link to the described procedure:

(just scroll down the page until you reach the long post by Revstate)

http://www.gearslutz.com/board/electron ... -tune.html

Oh, and welcome to the forum, of course!