Doepfer

Dieter - I would like this info posted also.

Thanks to you, and Peter for the idea -

Bill

  ----- Original Message ----- 
  From: hardware@doepfer.de 
  To: Doepfer_a100@yahoogroups.com 
  Sent: Thursday, April 03, 2008 12:09 PM
  Subject: AW: [Doepfer_a100] Re: A-143-1 Timebase modification: Fast, easy.


  Indeed we did not add this information to the DIY page because nobody was
  asking. You are the first one.

  For the A-143-1 the corresponding capacitor is "C1" (standard value 2.2uF)
  and is located behind the LED that displays the envelope.

  Best wishes
  Dieter Doepfer

  > This looks like a fantastic mod.
  > Forgive my n00b questions here:
  >
  > 1. Is the switch a DPDT ON - OFF - ON? (I assume it doesnt matter if
  > its a make-before-break or not)
  > 2. When you say "short across the caps", are you referring to adding
  > capacitors in parallel to the existing timing cap?
  > 3. Is the electrolytic the timing cap?
  >
  > I checked the DIY page but did not find this mod there.
  >
  > Thanks!
  >
  > --- In Doepfer_a100@yahoogroups.com, "Dieter Doepfer" <hardware@...>
  > wrote:
  > >
  > > Peter,
  > >
  > > thank's for this idea. We could add the capacitor positions of all
  > > corresponding modules (envelope generators, LFOs ...) to our DIY page if
  > > there are sufficient inquiries.
  > >
  > > Best wishes
  > > Dieter Doepfer
  > >
  > > > -----Ursprüngliche Nachricht-----
  > > > Von: Doepfer_a100@yahoogroups.com
  > > > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von (i think you can
  > > > figure that out)
  > > > Gesendet: Dienstag, 27. Juni 2006 18:23
  > > > An: Doepfer_a100@yahoogroups.com
  > > > Betreff: [Doepfer_a100] A-143-1 Timebase modification: Fast, easy.
  > > >
  > > >
  > > > Yo.
  > > >
  > > > Bringing my head above ground here for a second to give you the
  > > > scoop on a very easy, yet effective modification to the Quad A/R
  > > > Gen, the A-143-1.
  > > >
  > > > As you know, I like long envelopes. Adding a ON-OFF-ON switch
  > > > which will short in two additional caps across the 143-1's
  > > > 'money' (timing) cap will get you there if you want by adding the
  > > > very same range switch function inherent on the Doepfer ADSR.
  > > >
  > > > I've uploaded a diagram into the photos section of this
  > > > yahoogroup (pardon the snap - it was done on my cell phone).
  > > > It's entotled A143-1mod.jpg. It shows the mod itself (easy) and
  > > > where I opted to locate the switches, which nestled in neatly in
  > > > the blank area above the Voltage Output jacks of EG's 2, 3 and 4.
  > > > In that there wasn't an easy way to integrate the switch into the
  > > > first EG, I left that one alone.
  > > >
  > > > Using an ON-OFF-On switch allows you to to take the additional
  > > > caps out of the circuit altogether if you care to (switch resting in
  > > > the center position).
  > > >
  > > > BTW - this mod can be added to any EG. All you have to do is
  > > > find the timing cap and short additional caps over it. In this
  > > > specific mod, I used a 47uf on one side of the switch and a
  > > > 150uf on the other. So, long and loooooong.
  > > >
  > > > enjoy (or not!)
  > > >
  > > > - P
  > > >
  > > >
  > > >
  > > >
  > > >
  > > >
  > > >
  > > > Yahoo! Groups Links
  > > >
  > > >
  > > >
  > > >
  > > >
  > > >
  > > >
  > >
  >
  >
  > 



   


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