hello,

roland mayer told me, that the resonance behaviour of my a102
is normal. it just reacts a bit different, when compared with
other filters. when i turn the cutoff down to lower frequencies,
the oscillation appears later, with the pot at 4 - 5.

best wishes

self oscillate



--- In Doepfer_a100@yahoogroups.com , "selfoscillate
<synaptic_music@y...>" <synaptic_music@y...> wrote:

>
> 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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