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Doepfer

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

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Re: Ingo's A-120 (selfoscillate)

2004-12-15 by selfoscillate

--- In Doepfer_a100@yahoogroups.com, "selfoscillate" 
<synaptic_music@y...> wrote:
> 
> --- In Doepfer_a100@yahoogroups.com, "nirokesan" <nirokesan@h...> 
> wrote:
> > 
> > Thanks for the reply.  Perhaps if one of the staff is reading 
this 
> > they could respond so you don't have to take your module out.
> > 
> > regards,
> > 
> > Nick Keller
> 
> 
> 
> hello nick,
> 
> regarding the a120 audio input modification,
> i found some notes about the changes made by
> the doepfer technician:
> 
> 10k added at R15
> 100ยต added at C1
> 
> when i understand right, then the modification
> is done in a way that no parts were replaced,
> but new parts were added, soldered in parallel.
> 
> please, all you hardware guru's out there, correct
> me if i'm wrong. i really don't understand much of
> what is going on electrically.
> 
> best wishes
> 
> ingo


hello all,

now i understand.
when two resistors are soldered in parallel, then both
resistor values have to be added and then divided by 2.
thats why the resistance is lowered, when a small resistor
is added and soldered in parallel. ahaaa !
sometimes i feel like a newbie ;-)

best wishes

ingo

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