Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von yahoo@doepfer.de
> Gesendet: Montag, 20. Juli 2009 10:17
> An: Doepfer_a100@yahoogroups.com
> Betreff: AW: [Doepfer_a100] Is my filter faulty (A101-1 Vactrol)?
>
>
> > Hello
> >
> > First time on this forum.
> >
> > I've just bought a Doepfer modular and I'm have a slight problem
> > with the A101-1 Vactrol filter.
> >
> > Whenever I connect anything to one of the CV inputs I get a lot
> > of background noise/interference.  This happens even when the
> > corresponding CV control is zero and even when connecting to
> > sources with no control voltage output (e.g. mixer input or reset
> > on LFO)- so its not CV opening the filter.
> >
> > Any ideas anyone?
> >
> > Cheers
> >
> > Carter
>
> That's a very unusual behaviour because zero CV should be the same as an
> open CV connection. I'd recommend to return the module for repair. I have
> never heard of such a behaviour (i.e. connecting zero Volt CV that affects
> the sound) and have no idea what could be the reason (maybe it a problem
> with a GND loop ?).
>
> Best wishes
> Dieter Doepfer
>
>
>
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