hello psm,

the fourth switch on the a127 addon-panel switches
the level pot for the original signal from pre to post.
in "pre" the original signal is independent from the
input attenuator. if you turn the input attenuator
fully ccw, the original signal is still present at
it's output (depending on the original signal level pot).
in "post" the original signal will be dependent from the
input attenuator, so if you turn the input attenuator
fully ccw, there will be no signal at the original output
jack. this is handy when you want to turn all the a127
outputs off completely via the input attenuator.
there is a jumper on the pcb which is doing this.
but i don't use this switch often.

the switch beside the sampler module switches the internal
lowpass filter on or off (also a jumper on the pcb).

i've installed another row of switches beside my a176.
these are also connected to the jumpers on the pcb and
they switch the voltage range from +2.5/-2.5 volts to
+5/0 volts. also very handy.

best wishes

ingo

--- In Doepfer_a100@yahoogroups.com , "ps_minor" <pscottm@h...> wrote:
> ingo, btw, what's the 4th switch you have on yours also i see
another blank panel w a
> switch added next to you sampler module. mind sharing what you
have going there too
> cheers, -psm
>
>
> --- In Doepfer_a100@yahoogroups.com , "ps_minor" <pscottm@h...>
wrote:
> > ah ha. now your thinkin'. perfect. i happen to have a 4t panel
so i may as well switch
> all
> > 3. glad i saw this before reaching for the drill! thanks
again, -psm
> >
> >
> > >
> > > hello psm,
> > >
> > > i used a 4 te blank panel and installed the switches there.
> > > this is a very simple modification (i must have been simple,
> > > because i did it myself and i'm a total nut when it
> > > comes to soldering). here is a picture of the frame:
> > >
> > > http://www.selfoscillate.de/MODPART3.HTM
> > >
> > > best wishes
> > >
> > > ingo
> > >
> > >
> > >
> > >
> > >
> > > --- In Doepfer_a100@yahoogroups.com , "ps_minor" <pscottm@h...>
wrote:
> > > > > a127 triple resonance filter
> > > > > ----------------------------
> > > > > also a very good sounding filter.
> > > > > great for filter animation. i recommend
> > > > > switches on the front panel to select
> > > > > between lowpass and bandpass, far better
> > > > > than using the dip-switches on the pcb.
> > > > > sounds awesome with one filter in lowpass
> > > > > and the other two in bandpass mode.
> > > >
> > > > hi ingo, thanks for the tip. i forgot about the jumpers on
the
> > > a127! i took your
> > > > recommendation and switched one of them to LP (filter#3) and
i like
> > > it alot. i think i'll
> > > > install a switch just for that one since space is obviously
an
> > > issue, but will leave it in BP/
> > > > BP/LP til then.
> > > > cheers, -psm