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

> --- Dieter Doepfer <hardware@d...> wrote:
> > From: "Dieter Doepfer" <hardware@d...>
> > To: "Bakis Sirros" <synth_freak_2000@y...>
> > Subject: AW: 1 Re: MS50 filter module
> > Date: Tue, 15 Jun 2004 15:34:07 +0200
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: ALMAGATA@t...
> > [mailto:almagata@t...]
> > > Gesendet: Dienstag, 15. Juni 2004 14:15
> > > An: Doepfer_a100@yahoogroups.com
> > > Betreff: Re: 1 Re: MS50 filter
> > module
> > >
> > >
> > > Adding a switch is 2Euro increase in price... The
> > MS20 filter is
> > > designed for output both LP and HP so just a
> > switch and a couple of
> > > wire...
> >
> > You will have to switch a lot of signals resp.
> > electronic parts (capacitors,
> > resistors) simultaneously to switch between LP and
> > HP of the MS20 filter
> > (not a simple SPDT switch). So a multiple electronic
> > switch controlled by a
> > manual switch and a control voltage (similar to the
> > the A-101-2) will be
> > necessary. We will have to find out the additional
> > costs for such an option
> > (I assume about 15-20 Euro for the multiple
> > electronic switch controlled by
> > a manual switch and a CV input). In every case the
> > module will be a bit more
> > expensive but the advantage is that only one module
> > has to be manufactured.
> >
> > Best wishes
> > Dieter Doepfer

the gate input for selecting the filter mode is a great
feature. looking at the a101/2, i suggest a 12 te frontplate
for the ms20 filter, so we can have the same layout as with
the a122, but with additional switch and cv input.
is it better to have cv of resonance or jacks
for feedback input/output or both

best wishes

ingo