Vintage Synth Repair

Ive just calibrated my OBXa and there is some issue -

C5 is in the correct pitch when master Tune is at 12 o'clock,
but the stretching is too wide so the lower octaves are much lower than 
standard tune. 

There are two trimpots on the main DAC board, one is the 
"DAC Offset" and the other is "DAC Full Scale"...

Does is make sense that the "DAC Offset" is the main tune (pitch) 
control and the "DAC Full Scale" controls the  stretching ?

Thanks

Forget about it, it is now tuned,
and these trimpots does what I thought each other of them does... 

Thanks !


--- In vintagesynthrepair@yahoogroups.com, "gil_we" <gil_we@...> 
wrote:
>
> Ive just calibrated my OBXa and there is some issue -
> 
> C5 is in the correct pitch when master Tune is at 12 o'clock,
> but the stretching is too wide so the lower octaves are much lower 
than 

> standard tune. 
> 
> There are two trimpots on the main DAC board, one is the 
> "DAC Offset" and the other is "DAC Full Scale"...
> 
> Does is make sense that the "DAC Offset" is the main tune (pitch) 
> control and the "DAC Full Scale" controls the  stretching ?
> 
> Thanks
>