another way to achieve negative voltages is to change a jumper
setting in the a176 pcb and make the pontesiometers send a voltage in
the range of:+2.5 to -2.5.also another cv cource in the a100 system
is the a155,just stop it in the right step...also the a129/3 if you
connect nothing to the input cv and turn the offset knob to the right
will output a constant voltage,right ,this way you have 5 cv
sources in one module(i am not sure,i haven't try it).if you want
negative voltages just patch a voltage inverter in between or you can
use the invert function of the a166 logic module for the same task...
hope this helps...
bakis.





-- In Doepfer_a100@y..., "buechlerjoe" <buechlerjoe@t...> wrote:

> When I need a negative offset, I patch the A176 CV Source thru the
> A175 Voltage Inverter.
>
> Joe
>
> --- In Doepfer_a100@y..., "duffnuff" <duffnuff@h...> wrote:
> > > Why
> > > not just use an A138a mixer and the CV source module, like I
> > >do
> > >
> > > Joe
> >
> > joe
> > great suggestion (duh). makes sense for fine tuning vibratos,
> > etc, such as moving a vibrato(lfo) to stay above the osc pitch
> > rather than symmetrical all the time. but would this work for
> > negative offset values such as vibrato movement BELOW the
> > osc pitch can you get a negative value from the CV source to
> > mix w lfo
> > duff