hello oliver,

i also don't like the a121 very much, the other filters
are far better in my opinion. 4-pole filters are not so
common as highpass filters, but nevertheless the a123 is my
favorite highpass filter. you should look for an opportunity
to listen to it, maybe in a shop near you, because filters
are always a matter of taste.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , "omegaattraktor"
<omegaattraktor@n...> wrote:

> --- In Doepfer_a100@yahoogroups.com , "selfoscillate"
> <synaptic_music@y...> wrote:
> >
> > hello oliver,
> > the a123 is a fully resonant highpass filter and it has
> > a very stable self oscillation over the whole frequency band.
> > i know that some people don't like the a123, because the
> > resonance poti is scaled in an uncommon way, but i personally
> > love it. i'd say it is a real highpass filter, so what do you
> > mean with "somehow strange"
> >
> when i put the frequency to 0 (very low)on my a121 the signal on

the

> highpass out should be more or less unaffected. this is not the

case

> with my a121, the sound gets kind of dull. it is also difficult to
> boost low frequencies with high resonance settings. this is

something

> i really like on other highpassfilters.
>
> the one thing i don't like about the a123 is that it has 24db/oct.
> for highpass filters i normally find 12db/oct more usefull.but i

have

> to say i never had the chance to play with an a123.
>
> oliver
> http://www.namshub.ch/