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Doepfer

Index last updated: 2026-04-29 00:15 UTC

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Re: [Doepfer_a100] Re: A-136 CV question

2003-05-04 by Bakis Sirros

hi list,
isn't it sad to try to figure out what's going on
inside the a100 by watching the a170 or a185 or
a175...little leds???(btw,i do the same...).that's why
i have always proposed that we need a vu-meter
module.so,if you think you need one(like i do)vote in
the vu-meter poll....
bakis.


--- Joe Buechler <buechlerjoe@toadmail.com> wrote:
> Timothy, you're not the only one who needs to
> correct himself five 
> minutes after posting :-)
> 
> That's how long it took me, adjusting the voltage
> from an A176 CV 
> Source, and watching the LEDs on an A170, to
> convince myself that the 
> A136 does indeed process the A, +A, and -A paths
> independently, and 
> then sums the result. My A132 suggestion was all
> wet.
> 
> If nothing else, I've learned a little bit more
> about the A136 today.
> 
> Joe
> 
> --- In Doepfer_a100@yahoogroups.com, "Joe Buechler"
> <buechlerjoe@t...> 
> wrote:
> > Timothy, the A136 User's manual says that the
> signal is split into 
> > three parts, but no signal flow diagram is
> provided. (This is only 
> > the least of the problems with the A136
> documentation). The 
> > signal diagram on the module front panel suggests
> that the "A" gain 
> > is applied BEFORE the signal is fed to the
> positive and negative 
> > clipping circuits. That's why I made the
> suggestion that I did.
> > 
> > I suppose I could spend some time experimenting to
> determine the 
> > actual signal path, but it's a tedious business
> without a scope. I 
> > wish bakis would nudge Dieter to describe the A136
> signal path, and 
> > correct all the errors in the User's Guide while
> he's at it.
> > 
> > Joe
> > 
> > --- In Doepfer_a100@yahoogroups.com, "Tim
> Stinchcombe" 
> <timothy@t...> 
> > wrote:
> > > Hi Joe,
> > > 
> > > > If the positive/negative gain isn't an issue,
> couldn't you just 
> > > route 
> > > > the audio thru an A132 VCA and get voltage
> control of the gain 
> > that 
> > > > way?
> > > 
> > > Internally in the A-136 the signal is split into
> three paths, and 
> > > the 'A' gain knob affects just one of these, and
> it's the 
> > interaction 
> > > of this path with the other two that produces
> all the interesting 
> > > waveshaping effects. I suspect that doing what
> you suggest just 
> > > probably wouldn't be so interesting.
> > > 
> > > Tim
> 
> 


=====
synthfreak(parallel worlds)
athens-greece
[Doepfer_a100] group owner

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