btw, it is really wierd:
i have a modular with 18 PSU's and i have never
noticed any interference in the audio outputs.
are you sure that all the 6U cases are properly
grounded
but, of course, you should contact Roland Mayer
direct.
his email: technik@...
bakis.




--- selfoscillate < synaptic_music@... > wrote:

>
>
> hello richard,
>
> i'd love to help you, but i can't.
> i'm a nut when it comes to electrical things.
> maybe you should email the technical
> stuff at doepfer directly.
>
> best wishes
>
> ingo
>
>
>
> --- In Doepfer_a100@yahoogroups.com , "trebcavxx"
> <richardbarton@c...>
> wrote:
> >
> > You've highlighted a condition that's been present
> in my own 75-
> > module synth almost from the word GO - pulsating
> modulation in the
> > sound output. It occurs to a greater or lesser
> degree in virtually
> > ALL patches (I have 11 VCOs) - and takesd the form
> of a cyclic
> > variation in amplitude - usually giving the sound
> a "woo-
> > woo.......woo-woo........woo-woo" character rather
> than a straight
> > tremolo effect. As I say, this has happened from
> the humble
> > beginnings of a single VCO setup. I now have 5
> seperate power
> > supplies in the cabinet. I'm a bit doubtful that
> LEDs are causing
> it
> > in my case, but would anyone have a cure for
> either of our
> problems
> > I notice the previous mailing has been pretty well
> ignored.
> > Richard
> >
> > --- In Doepfer_a100@yahoogroups.com , "stuadh"
> <stuadh@h...> wrote:
> > >
> > > Hi,
> > >
> > > I've been reading up on interference caused by
> LEDs on the
> > > power bus in the archives, a problem that I'm
> having in my
> > > homemade and commercial cases. I've minimised
> the problem
> > > by strategically placing the offending modules,
> but there was
> > > some discussion about including large capacitors
> between the
> > > power rails to help stop this problem occuring
> in the first place.
> > >
> > > Has anyone done this, and was it successful
> > >
> > > What constitutes a "large capacitor" and what
> type. Does the
> > > polarity make a difference
> > >
> > > Yours Aye
> > >
> > > Stuadh
>
>
>
>

=====
Bakis Siros
Parallel Worlds / Polariton
Athens-Greece
1 group owner
http://www.shimarecords.co.uk
http://www.ward12.com



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