Analogue systems

But that's what crosstalk does as a term in electronics. 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 
  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, "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, 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, "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, "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]
  > >
  >



   


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