Analogue systems

Emailing Doepfer is an option but this is an Analogue Systems case.
I'll send an email to ASys but I doubt the manufacturer's will reply
with any new info. The crosstalk is faint enough I may just say it's
part of the system's personality and maybe migrate the doepfer modules
to a doepfer case when I accumulate enough. Other than this crosstalk
issue, the modules seems to be working just fine in the case.

I will also try installing one module at a time, starting with the two
VCOs and see if they still exhibit this behavior.

Thanks 

--- In analogue_systems@yahoogroups.com, Bakis Sirros
<synth_freak_2000@...> wrote:
>
> yes, that is a good idea.
> best regards,
> Bakis.
> 
> 
> --- Monroe Eskew <monroe.eskew@...> wrote:
> 
> > I suggest emailing Doepfer.  Please let us know what
> > they say!
> > 
> > On 8/16/07, ilanode <techmeier@...> wrote:
> > >
> > >   --- In
> >
> analogue_systems@yahoogroups.com<analogue_systems%40yahoogroups.com>,
> > > "Tom Remi Flygel"
> > > <tom-rf@> wrote:
> > > >
> > > > But that's what crosstalk does as a term in
> > electronics.
> > >
> > > Sure, I'm aware of this. Since a modular synth
> > ought to be designed to
> > > minimize cross talk, I don't think the prob. is
> > the design itself.
> > > Personally I never experienced this with my
> > Doepfer VCOs nor ever
> > > heared about similiar issues.
> > >
> > >
> > > When two telephone cables with improper isolation
> > are lying next to
> > > eachother, the signal will "jump" over to the
> > other cable. This is why
> > > you could sometimes listen to other people's
> > conversations when you
> > > were having a phonecall. There doesn't have to be
> > any kind of
> > > connection between the two, as long as they're
> > badly isolated the
> > > signal's electromagnetism might affect the cable
> > next to it. I think
> > > that's what's happening here.
> > > >
> > > > ----- Original Message -----
> > > > From: ilanode
> > > > To:
> >
> analogue_systems@yahoogroups.com<analogue_systems%40yahoogroups.com>
> > > > Sent: Thursday, August 16, 2007 10:33 AM
> > > > Subject: [analogue_systems] Re: RS15 rack
> > crosstalk between
> > > doepfer modules
> > > >
> > > >
> > > > The Doepfer power connector has 16 pins - 2 of
> > them belong to the
> > > > CV-bus on the power distributing board. If ASys
> > follows Dopefer's pin
> > > > out with their RS15 power sockets this would
> > explain how a CV can
> > > > spread without a patchcord. Mind you, it's still
> > strange since you
> > > > actually should have to connect a CV to one of
> > the 4 VCOs to controll
> > > > all of them via the CV-bus...
> > > >
> > > > BTW On the Doepfer bus boards are jumpers to
> > (dis-)connect the CV bus.
> > > >
> > > > --- In
> >
> analogue_systems@yahoogroups.com<analogue_systems%40yahoogroups.com>,
> > > "TacocaT" <zpardos@> wrote:
> > > > >
> > > > > Well I have four of them and I don't want any
> > of them near the power
> > > > > supply. So I don't think that's an option.
> > However, can you please
> > > > > inform me theoretically as to how the signal
> > could be passing
> > > from one
> > > > > module to another without patch cables.
> > > > >
> > > > > Thanks
> > > > >
> > > > > --- In
> >
> analogue_systems@yahoogroups.com<analogue_systems%40yahoogroups.com>,
> > > alex banks
> > > > > <alexander.banks@> wrote:
> > > > > >
> > > > > > Try moving the VCOs apart?
> > > > > >
> > > > > >
> > > > > > On 15 Aug 2007, at 14:38, TacocaT wrote:
> > > > > >
> > > > > > > Actually I have not yet installed my VCA.
> > If I plug my
> > > headphones
> > > > > > > directly into the output of one VCO I can
> > faintly hear the
> > > pitch of
> > > > > > > the second VCO if I, say, do a frequency
> > sweep with the POT
> > > of the
> > > > > > > second VCO. What would be allowing the
> > signal from the second
> > > > VCO to
> > > > > > > leak into the output of the first VCO? I
> > am not using ANY
> > > > patches for
> > > > > > > this.
> > > > > > >
> > > > > > > thanks
> > > > > > >
> > > > > > > --- In
> >
> analogue_systems@yahoogroups.com<analogue_systems%40yahoogroups.com>,
> > > "monroeeskew"
> > > > > > > <monroe.eskew@> wrote:
> > > > > > > >
> > > > > > > > That is strange. The modules are
> > independent and don't pass
> > > > signals
> > > > > > > > through the power supply. Is the one VCO
> > still connected to a
> > > > > VCA or
> > > > > > > > mixer while you do this? Perhaps the
> > VCA/mixer is not
> > > completely
> > > > > > > > attenuating when it should be, so you
> > may need to adjust a
> > > > trimpot
> > > > > > > on it.
> > > > > > > >
> > > > > > > > One thing I have noticed is that no
> > matter how much I
> > > adjust my
> > > > > ASys
> > > > > > > > VCA or the volume CV on my keyboard, the
> > signals cannot be
> > > 100%
> > > > > > > > attenuated and can still be heard very
> > faintly if I turn
> > > up my
> > > > > > > speaker
> > > > > > > > loud enough. I can tolerate this though.
> > > > > > > >
> > > > > > > > --- In
> >
> analogue_systems@yahoogroups.com<analogue_systems%40yahoogroups.com>,
> > > "TacocaT" <zpardos@>
> > > > > wrote:
> > > > > > > > >
> > > > > > > > > Hello,
> > > > > > > > >
> > > > > > > > > I just recieved my rs15 case and I put
> > a couple of doepfer
> > > > style
> > > > > > > VCOs
> > > > > > > > > into th case and I can hear one VCO's
> > output (faintly)
> > > > > through the
> > > > > > > > > other's output (no patches). This
> > shouldn't be happening.
> > > > Does it
> > > > > > > > > happen for anyone else? Is there also
> > crosstalk when
> > > using the
> > > > > > > ASys
> > > > > > > > > power connectors?
> > > > > > > > >
> > > > > > > > > I wonder if the doepfer racks have
> > this problem at all.
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been
> > removed]
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> ----------------------------------------------------------
> > > >
> > > >
> > > > No virus found in this incoming message.
> > > > Checked by AVG Free Edition.
> > > > Version: 7.5.484 / Virus Database: 269.11.19/955
> > - Release Date:
> > > 15.08.2007 16:55
> > > >
> > > >
> > > > [Non-text portions of this message have been
> > removed]
> > > >
> > >
> > >  
> > >
> > 
> > 
> > [Non-text portions of this message have been
> > removed]
> > 
> > 
> === message truncated ===
> 
> 
> Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
> [Doepfer_a100] group owner
> http://www.parallel-worlds-music.com
> http://www.myspace.com/parallelworldsmusic
> http://www.myspace.com/interconnectedmusic
> http://www.myspace.com/memorygeist
> http://www.DiN.org.uk
> http://www.shimarecords.co.uk
> http://www.rubber.gr
> Athens-Greece
> 
> 
>        
>
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