hello ingo,
your idea is great!
if someone could upload some recordings of the
original buchla 259 complex vco,it would be great.
then, these recordings could be forwarded to dieter
himself ,so he can make direct comparisons and decide
what to build,the 259 vco module ,or the expander!
bakis.



--- selfoscillate < synaptic_music@... > wrote:

>
> i think this issue needs some more investigation.
> both points are valid, each solution has it's
> advantages.
> it is really difficult, because only few people have
> heard
> an original buchla 259 and know about the special
> behaviour
> of this unit.
>
> maybe we can get some raw recordings of the buchla
> 259
> from anywhere just to know what we are talking
> about.
>
> best wishes
>
> ingo
>
>
> --- In Doepfer_a100@yahoogroups.com , "ALMAGATA@t..."
> <almagata@t...>
> wrote:
> > Then,
> >
> > As i said, the expander is only a new
> waveshaper....
> > Again, I don`t like the sound of 3340 VCOs, theese
> are too clinical
> and
> > lack of the raw power of discrete VCOs, also we
> will miss a new
> VCO...
> > I know would be an effort for dieter making a new
> VCO, (dual VCO in
> we
> > want a 259 module) but I think is time for a new
> one with different
> > carateristics than the 110 and 111. The poll was
> for a buchla 259
> > complex oscillator, not for a waveshaper module,
> and I don`t want
> to
> > buy another waveshaper.
> > May be the CEM is triangle core, but what about
> the sound What
> about
> > the response to FM where is the AM What about
> all the previous
> > discussion about the sonic differences between
> VCOs The buchla
> design
> > have an organic quality that will be missed using
> a CEM3340 or
> other
> > designs, the 259 VCO core have a sound and a
> quality of its own.
> I`m
> > sure I can use my serge NTO and EMS AKS triangle
> outs to this
> > waveshaper and it will sound a lot better than
> using the A111
> triangle
> > out, so is not just the waveshaper.
> > If the 111 expander is made, we will not see a
> buchla VCO in the
> future
> > for sure...
> > Please consider this and vote in the poll.
> > Best Regards,
> >
> > Josue.
> >
> > ----- Mensaje Original -----
> > De: Bakis Sirros <synth_freak_2000@y...>
> > Fecha: Viernes, Agosto 6, 2004 12:52 pm
> > Asunto: Fwd: AW: [Doepfer_a100]buchla 259 vco or
> expander(dieter's
> > answer)
> >
> > >
> > > --- Dieter Doepfer <hardware@d...> wrote:
> > >
> > > > From: "Dieter Doepfer" <hardware@d...>
> > > > To: "Bakis Sirros" <synth_freak_2000@y...>
> > > > Subject: AW: 1 Re: New poll for
> > > > Doepfer_a100
> > > > Date: Fri, 6 Aug 2004 12:48:48 +0200
> > > >
> > > > > -----Urspr�ngliche Nachricht-----
> > > > > Von: Bakis Sirros
> > > > 2
> > > > > Gesendet: Donnerstag, 5. August 2004 21:01
> > > > > An: Doepfer_a100@yahoogroups.com
> > > > > Betreff: Re: 1 Re: New poll for
> > > > Doepfer_a100
> > > > >
> > > > >
> > > > > hello psm,
> > > > > i don't know that yet.but,i guess that
> you'll have
> > > > to
> > > > > only connect the triangle output of the a111
> to
> > > > the
> > > > > expander module via a normal
> patchcable.dieter
> > > >
> > > > right. Probably only a patch from triangle out
> to
> > > > the waveshaper module.
> > > >
> > > > The suggested "A-111 expansion module" will of
> > > > course not only work with the
> > > > A-111 but with every VCO that has triangle
> waveform
> > > > available.
> > > >
> > > > The main difference - as mentioned earlier by
> other
> > > > members - between the
> > > > Buchla design and other VCOs is the triangle
> core,
> > > > i.e. the basic waveform
> > > > from which all other waveforms are derived is
> > > > triangle - in contrast e.g. to
> > > > the Moog VCOs, SSM2033 or A-110 for which
> sawtooth
> > > > is the basic waveform.
> > > > For triangle VCOs normally a bipolar current
> source
> > > > (so-called Wilson
> > > > current mirror) is used in contrast to
> unipolar
> > > > current sources for sawtooth
> > > > VCOs. The CEM3340 also uses triangle as basic
> > > > waveform. So from my (so far
> > > > theoretical) point of view using a CEM3340
> based VCO
> > > > will have no
> > > > disadvantages compared to the original Buchla
> VCO
> > > > core as the tracking of
> > > > the A-111 is much better. Maybe there are
> details I
> > > > have overlooked but I
> > > > don't think so.
> > > >
> > > > Waveforms derived by waveshaping circuits from
> > > > triangle resp. sawtooth will
> > > > sound a bit different. One of the "problems"
> with
> > > > sawtooth as basic waveform
> > > > is that the saw reset is not immediately but
> takes a
> > > > few microseconds as a
> > > > capacitor has to be discharged. Consequently
> all
> > > > waveforms derived from saw
> > > > will have a short spike at the reset position
> of the
> > > > saw. For waveforms
> > > > derived from triangle this peculiarity does
> not
> > > > appear as only the
> > > > charge/discharge direction at the bottom/top
> of the
> > > > wave has to be changed
> > > > and consequently the spikes mentioned above do
> not
> > > > occur.
> > > >
> > > > But the VCO core and the waveshapers are two
> > > > different sub-modules. So why
> > > > not combine the Buchla waveshaper with
> triangle or
> > > > sawtooth based VCOs. This
> > > > is why I advocate for a separate Buchla type
> > > > waveshaping unit as it probably
> > > > could be combined with any VCO that has a
> triangle
> > > > output available. If a
> > > > triangle based VCO is used (e.g. A-111 or any
> other
> > > > CEM3340 based VCO) the
> > > > sound should be very close to the Buchla VCO
> from my
> > > > point of view.
> > > >
> > > > Best wishes
> > > > Dieter Doepfer
> > > >
> > > >
> > > >
> > >
> > >
> > > =====
> > > Bakis Siros
> > > Parallel Worlds / Polariton
> > > Athens-Greece
> > > 1 group owner
>

=== message truncated ===


=====
Bakis Siros
Parallel Worlds / Polariton
Athens-Greece
1 group owner
http://www.shimarecords.co.uk
http://www.ward12.com



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