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

>
> dieter says:"
> > the planned CV expander module and the A-138 modules
> > are very similar. The difference is that the A-138
> > are stand-alone modules that could be patched to any
> > other module to expand the number of CV or audio
> > inputs. The CV expander module has to be assigned
> > firmly to a module (e.g. A-121) and placed close to
> > the module as there are internal connections (not
> > via patch cables) between the modules. One will be
> > able do define via jumpers on the CV expander module
> > how the 5 inputs of the module are distributed to
> > the main module (e.g. A-121). E.g. one could use the
> > inputs 1-2 to expand the frequency control input of
> > the A-121 (to a total of 3), input 3 to expand the
> > resonance control input of the A-121 (to a total of
> > 2) and the inputs 4-5 to expand the audio input of
> > the A-121 (to a total of 3). In this examples 3
> > internal connections between the CV expander module
> > and the A-121 will be necessary (CV frequency
> > common, CV resonance common, audio common). Usage of
> > the CV expander module will require a bit of
> > electronic knowledge and solder experience. We think
> > about adding a kind of "A-100 DIY corner" to our
> > A-100 web pages after the NAMM where some basic
> > principles of all A-100 modules are explained (e.g.
> > control voltage and audio summing with operational
> > amplifiers basic circuits, lin/log control, simple
> > modifications of existing modules - e.g. adding
> > CV/audio inputs/outputs, modifications of
> > A-150/A-151 for higher voltages and so on).
> >
> > b.t.w. In combination with the chaos/module of
> > uncertainty we are also working on a so-called
> > Chua-Oscillators (using negative resistors simulated
> > with NICs/negative impedance converters and
> > gyrators), Ueda attractors, Duffing oscillators,
> > chaotic FM (cross-coupled FM oscillators) and
> > others. But it's to early to publish details as we
> > are only in the beginning. Many of these functions
> > can be realized with existing modules but for some
> > functions new modules are required. More details
> > after the NAMM and if we have results we could
> > publish.
> >
> > b.t.w. We have now sound examples for the A-198
> > available on our web site (made by our Italian A-100
> > user Enrico Cosimi).
> >
> > This is my last message before I leave for the NAMM
> > tomorrow.
> >
> > (Feel free to publish all this information in the
> > group if desired)
> >
> > Best wishes
> > Dieter Doepfer
> > Doepfer Musikelektronik GmbH
> > http://www.doepfer.de
> > email: hardware@d...
> >
> > As we exhibit in January 2003 at the NAMM show in
> > Los Angeles/Anaheim (hall A / booth 6306) I will not
> > be able to answer emails from January 12 until 29,
> > 2003. Please address your technical questions to
> > technik@d... or software@d... during
> > this time.
>
> ANY COMMENTS
> bakis.
>

i like the idea of an "A-100 DIY corner" very much.
and the chua-osc is something i would buy for sure.

best wishes

self oscillate