Hi all,

thanks for your answers. I got the DI Box, one recommended on the
SOS Website (ART Cleanbox II) and not the cheapest one around. Not
one bit of difference. I connected up the earths of all the cables
again (and again no difference. This is definitely a
Mixer-Analogue Synth problem as removing any connection between the to
makes the problem disappear. By the way, this isn't a small problem -
it's really loud!

Can anyone offer the next step as the synth is currently unusable

Your in desperation

Stuadh

--- In Doepfer_a100@yahoogroups.com , "Carlos" <bushwick@...> wrote:
>
>
> if you are in the US try one of those cheap plug adapters from 3 ends
> to two on your computer's power cable plug, (so the 3rd circular ends
> up removed from the equation) this solved a problem I had before with
> my laptop causing ground noise. but might be more of a temporary
> solution. I just don't use the laptop anymore :)
>
>
> Carlos.
>
> --- In Doepfer_a100@yahoogroups.com , "Anwander, Florian"
> <Florian.Anwander@> wrote:
> >
> > Hi
> >
> > we had similar problems last week within a large live setup.
Around 15
> > musicians with computers, lots of synths and softsynth, all mixed to
> > submixers, which are led to a main mix. The lenght of the power and
> > audio cables are 6 meters for the most musicians at least.
> >
> > Though this sounds like a bunch of humm traps the most
participians do
> > not have real problems, but two guys:
> > Finally we could track down that these two are using
> USB-Audiointerfaces
> > where the interfaces are powered by the USB port, not by an external
> > supply. This means that you have the dirty ground of the digital
domain
> > as audioground.
> >
> > Our solution now was simply to forbid this type of audiointerfaces.
> >
> > Florian
> >
> > stuadh wrote:
> >
> > > Hi,
> > >
> > > I would like to appeal to anyone with experience in eradicating a
> > > probable ground loop. I've just done a bit of upgrading in my
studio,
> > > and I've developed a nasty buzzing in my system. I've narrowed it
> > > down to the interplay between Logic 7 and my analogue synth. Of
note
> > > is that I have not changed anything inside the synth since
before the
> > > upgrade and that the problem exists even when the synth is
turned off
> > > but not when it is unplugged from the wall. In fact, I've just been
> > > jiggling about with the plug and the buzz come back as soon as the
> > > earth pin of the plug makes contact.
> > >
> > > The problem also only exists when Logic is running but not when i
> > > run things like iTunes etc. It can also be controlled by the mixer;
> > > turning down the channel volume or EQing it out work. I've also
gone
> > > around turning off and unplugging everything except the computer,
> > > synth and mixer, but the buzz remains.
> > >
> > > Can anyone help
> > >
> > > Yours Aye
> > >
> > > Stuadh
> > >
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
> > --
> > Florian Anwander |ConSol
> > Tel. +49(89)45841-133 |Consulting&Solutions Software GmbH
> > Fax +49(89)45841-111 |Franziskanerstr. 38, D-81669
München
> > email: florian.anwander@ | http://www.consol.de
> >
>