Elektor Formant Modular

Hi everyone!
Im pretty sure that my VCO�s are out of tune, I dont really notice
because Im usually only using notes that a few tones apart, an octave
or two at most. But when I sat down the other day and made a 4 octave
jump C1 to C4 on my sequncer, the C4 sounded almost a whole tone out.

Checking the docs on the procedure, I gopt very confused. I was
expecting a trimpot to adjust the scaling, maybe 2 (course and fine)
but... the manual describes all manner of strange techniques..
involving voltmeters and oscilloscopes!!! I DO have a voltmenter of
course, but I simply did NOT understand the manual.

PLUS when I DID try the trimpots mentioned in the manual, not much if
anything seemed to happen...

Can someone run thru the procedure, in laymans language please??

Cheers..

Mark

Hi Mark

It has been a long time since I tuned the vco's but I remember it wasn't too difficult by ear with a reference tone.  Can't remember the exact procedure, sorry. I'll post it when I remember.
regards

>Hi everyone!
>Im pretty sure that my VCO´s are out of tune, I dont really notice
>because Im usually only using notes that a few tones apart, an octave
>or two at most. But when I sat down the other day and made a 4 octave
>jump C1 to C4 on my sequncer, the C4 sounded almost a whole tone out.
>
>Checking the docs on the procedure, I gopt very confused. I was
>expecting a trimpot to adjust the scaling, maybe 2 (course and fine)
>but... the manual describes all manner of strange techniques..
>involving voltmeters and oscilloscopes!!! I DO have a voltmenter of
>course, but I simply did NOT understand the manual.
>
>PLUS when I DID try the trimpots mentioned in the manual, not much if
>anything seemed to happen...
>
>Can someone run thru the procedure, in laymans language please??
>
>Cheers..
>
>Mark
>

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