Doepfer

> Hi
>
> Can anyone help me please with the following issue?
>
> I am using a dark time with an A-100 system.
>
> I find that the tuning produced by CV 2 output is different
> (slightly flat) when compared to the tuning produced by CV1.
> My 3 A-110 VCO's can be adjusted to be in tune with a midi
> keyboard and with each other such that when they are keyed via
> midi everything is in tune.
>
> If I connect the CV1 output to any/all of the A-110 VCO's then
> again everything is still in tune and no further adjustments are required.
> However if I connect CV2 from the dark time to a A-110 VCO then
> the tuning is flat and no adjustment of the second row of
> "knobs" of the dark time will make it in tune with a VCO
> connected to the CV1 output. Any adjustment is either slightly
> flat or slightly sharp.
>
> Now I know that I could just retune the VCO or VCO's that I use
> with the CV2 output but that means when I want to play the A-100
> from a midi keyboard I have to retune those VCO's that have been
> used with the CV2 output.
> Is there a trimming pot on the Dark Time PCB that allows for fine
> tuning of the CV output?
>
> Thanks

there are two trimming potentiometers on the Dark Time control board
labelled "CV1 OUT SCALE" and "CV2 OUT SCALE". They are used to adjust the
scale (1V/oct) of the corresponding output.

Best wishes
Dieter Doepfer