hello,

i know that the diode filters act strange, but with the
a102 it is more than strange ;-)

because of diode tolerances the filter slope changes
with cutoff frequency and resonance.
thats why it is named "diode filter" and not "24db diode filter".
dieter doepfer explained this to me several weeks ago.
the resonance and the cutoff also slightly change each other.

when i compare the a102 with a rs500e, which is also a
diode type filter, then the sound is similar, but on the rs500e
the self oscillation begins with the pot at approx 8 just as usual.

anyway, the a102 sounds really good, so maybe it is
not that important. it was just a bit irritating to me.

best wishes

self oscillate (nomen est omen ;-)



--- In Doepfer_a100@yahoogroups.com , Bakis Sirros
<synth_freak_2000@y...> wrote:

> hi list,
> the diode filter has a "strange" resonance response by
> default!if you read the doepfer a102 webpage ,you will
> see that this module has a resonance and filter
> cut-off that are not independent!!so,the fcutoff and
> the res. settings affect each other!
> so,it is normal!
> bakis.
>
>
>
> --- "antonhuber888 <yahoo3@b...>"
> <yahoo3@b...> wrote:
> > hello,
> >
> > it is the same with mine!
> >
> > greets
> > Anton
> >
> > >
> > > hello,
> > >
> > > i got my a102 today and it sounds really nice.
> > > but there is something strange with the resonance.
> > > the filter starts to oscillate very early, when
> > the
> > > pot is set to approximately 2.5 !!
> > >
> > > i can't imagine that this is the way it should
> > react.
> > > anyone else who owns an a102 already
> > >
> > > best wishes
> > >
> > > self oscillate
> >
> >
>
>
> =====
> synthfreak(parallel worlds)
> athens-greece
> 1 group owner-moderator
>
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