--- Dieter Doepfer < hardware@... > wrote:

> From: "Dieter Doepfer" < hardware@... >
> To: "bakis Sirros" < synth_freak_2000@... >
> Subject: AW: 1 Re: the updated a107
> link!!!
> Date: Mon, 18 Nov 2002 18:01:18 +0100
>
> There is always a discussion how many CV inputs with
> and without attenuators
> should be available for a certain function of a
> module. We discuss this matter
> since many months (or even years) and one solution
> would be the following: We
> could manufacture a passive module with e.g. 5 input
> sockets with attenuators
> that could be used to extend the control input of an
> existing module. Nearly
> each voltage controlled parameter of the modules has
> a so-called summing node
> available (for experts: inverting input of the
> summing operational amplifier
> with vurtual GND level). This node is used to add up
> all control voltages for
> the function (e.g. for the A-111 VCO the 1V/oct
> input, the manual coarse and
> fine tune, the octave switch and the CV input with
> attenuator). It would be
> possible to add more CVs to this summing node. All
> we had to do is to publish
> the summing nodes for all modules. The output of the
> new passive extension
> module would have to be soldered to the summing node
> of the module in question.
> With different jumpers available at the passive
> extension module it would be
> possible to divide the 5 inputs and attenuators so
> that they could be used
> together (i.e. 5 inputs for one parameter) or
> divided as desired (e.g. 3+3 or
> 4+1 or even 1+1+1+1+1). If someone is familiar with
> electronics of course he
> could do this extension himself (simply one jack
> socket + potentiometer +
> resistor required).
>
> How about this solution that would work nearly for
> each voltage controlled
> parameter of the A-100
>
> Dieter Doepfer
>
>
>
>
> > -----Urspr�ngliche Nachricht-----
> > Von: bakis Sirros
> [mailto: synth_freak_2000@... ]
> > Gesendet am: Montag, 18. November 2002 14:55
> > An: dieter doepfer
> > Betreff: Fwd: 1 Re: the updated a107
> link!!!
> >
> >
> > --- ringmod45 < ringmod45@... > wrote:
> > > To: Doepfer_a100@yahoogroups.com
> > > From: "ringmod45" < ringmod45@... >
> > > Date: Mon, 18 Nov 2002 01:44:21 -0000
> > > Subject: 1 Re: the updated a107
> link!!!
> > >
> > >
> > > hi Bakis,
> > >
> > > the feature set for the module is amazing, it is
> > > very good
> > > considering the price. the layout of the A107
> module
> > > is very packed
> > > and well laid out. however, one little niggle,
> there
> > > is only one
> > > input and pot for the frequency in on the
> module.
> > > these are the
> > > results from the poll concerning the issue of
> the
> > > frequency input and
> > > pots.
> > >
> > > would you like to have an extra Voltage Control
> > > Input with an
> > > Attenuator (i.e. one fixed input and two inputs
> > > with Attenuators
> > > like the A120) 17 14.41% that's 17 out of 19
> > > voters.
> > >
> > > i think there should be at least one dedicated
> > > 1v/oct input and then
> > > at least one variable input jack and pot added
> to
> > > the module. this
> > > would add value to the module not having to buy
> a
> > > mixer for the
> > > frequency input. if this the final layout for
> the
> > > module, you will
> > > need a mixer to have an extra modulation to
> control
> > > the frequency
> > > input. also if you need to have a precise 1v/oct
> > > modulation source at
> > > the frequency input and say an lfo as well,
> would
> > > this compromise the
> > > 1 v/oct source, if mixed together with a linear
> > > mixer
> > >
> > > anyone Mr.Doepfer
> > >
> > > Regards,
> > > RM
> > >
> > >
> > > --- In Doepfer_a100@y..., bakis Sirros
> > > <synth_freak_2000@y...> wrote:
> > > > hi list,
> > > > check out the updated a107 link!!it containes
> the
> > > pic
> > > > of the a107!!and some additional features,too!
> > > > bakis.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > =====
> > > > synthfreak(parallel worlds)
> > > > athens-greece
> > > > 1 group owner-moderator
> > > >
> > > >
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> >
> > =====
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> > athens-greece
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> >
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>

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