hello bakis,

you can amplify a signal even with a vca.
for example if you send a cv greater than
+5 volts to the cv inputs of an a132, it will
actually amplify the signal. if you send a cv
of +10 volts to the cv inputs of an a132,
the signal will be amplified by factor 2.

but you are right, it is far better to use
an a133, because it has even more gain.
it is also interesting to invert the
resonance loop with the a133. this can have
very nice effects, depending on the used
filter.

best wishes

ingo




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

>
> hello, ingo,
> as far as i remember, the feedback loop(resonance)
> that one can make with the modules you
> mentioned(a1870, a138,vca) will sound ok, if you
> replace the vca with the vc polarizer module a133. the
> reason for this is that the resonance loop must have
> an amplification rate of more than 1. so, instead of a
> vca module(a131,a132) one should use a real VC
> amplification module like the a133 which has a gain
> rate of 2,5. dieter coprrect me if i'm wrong though.
> best regards,
> bakis.
>
>
>
>
>
> --- selfoscillate <synaptic_music@y...> wrote:
>
> > --- In Doepfer_a100@yahoogroups.com , "selfoscillate"
> >
> > <synaptic_music@y...> wrote:
> > >
> > > --- In Doepfer_a100@yahoogroups.com , "Zoran
> > Bosnjak"
> > <dj_allin@h...>
> > > wrote:
> > > >
> > > >
> > > > Ernst,
> > > >
> > > > let me jump into conversation. I used to own
> > A-102, and
> > resonance
> > > on it is
> > > > one of the most powerful tools I ever heard. Why
> > Cause the
> > > character of
> > > > the sound (or call it a timbre) changes when
> > changing amount of
> > > resonance.
> > > > So it is really not about playing resonance as
> > oscillator, but
> > > more like
> > > > "timbre modifier". I posted in this group that
> > it is a pity that
> > > such a
> > > > powerful feature does not have CV control of
> > resonance amount,
> > and
> > > Mr.
> > > > Doepfer replied, and explained how this feature
> > can be added
> > > (cause it's
> > > > nothing but the addition of one VCA to control
> > the amount of
> > > resonance).
> > > > However, I do not have the skills to do even
> > something simple
> > like
> > > that - I
> > > > completely depend on manufacturers/third parties
> > when it comes
> > to
> > > > alteration/maintenance of my modular.
> > >
> > >
> > > hello zoran,
> > >
> > > you can always use a mixer, a multiple and a vca
> > and do
> > > a patch to get voltage controlled resonance.
> > > patch the unfiltered signal to one mixer input.
> > > patch the mixer output to the filter input.
> > > patch the filter output to a multiple.
> > > take the signal from the multiple and patch it
> > > into the vca. then patch the vca output to
> > > another input of the mixer. opening the vca is
> > > like increasing the resonance. when using a
> > polarizer
> > > instead of an vca you can overdrive the resonance
> > > or you can invert it.
> > >
> > > best wishes
> > >
> > > ingo
> > >
> >
> > oh and what i have forgotten, in some cases it
> > alters
> > the sound of a filter when a resonance loop or cv of
> > resonance is added directly to the circuit. so
> > sometimes
> > it is not the best option to add all features
> > possible.
> >
> > best wishes
> >
> > ingo
> >
> >
> >
> >
> >
> >
>
>
> Bakis Sirros
> Parallel Worlds
> Athens-Greece
> 1 group owner
> http://www.shimarecords.co.uk
> http://www.rubber.gr
>
>
>
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