Well I use 4 a131s for audio so...
I will contact Dieter.
Thanks!

On 11/2/05, selfoscillate < synaptic_music@... > wrote:
>
> hello ernst,
>
> i had this problem with one of my newer a130's as well.
> the output of the a130 was inverted, but besides
> this the unit worked as intended.
> it appeared to be a wrong wiring on the pcb.
> as long as you use the a130 for audio applications,
> this is no problem, but it sure is a problem if you
> use it to modify control voltages.
> dieter fixed this issue on my a130 (i'm not good in
> soldering things), i suggest that you contact him directly.
>
> best wishes
>
> ingo
>
>
>
> --- In Doepfer_a100@yahoogroups.com , "achtung_999"
> <heinrich.himmelwasser@g...> wrote:
> >
> > Some other strange thing I noticed this weekend with the
> oscilloscope at hand..
> > I own one a132 and two a130s. The two 130s are of different
> generations, which I don't
> > object to so much.
> > What I did is the following:
> >
> > I patch the output of an a118 random voltage into an a172 max/min.
> > As second input I input a constant voltage from my a176 to make
> sure that the max
> > output of the a172 puts out only positive values.
> > This goes into the vca as signal and then I take an envelope as cv
> input.
> > This in all the cases delivers a positive voltage output you would
> say...
> > However my a130 of the second generation presented a negative
> output, to my surprise.
> > All the other mentioned vca's behaved as expected...
> >
> > Is something wrong with my a130(second generation) or is this an
> intentional design
> > thing.. (would be strange if you'd ask me)
> >
> > Greetings,
> >
> > Ernst
> >
>
>
>
>
>
>
>
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