MOTM

I should have been more specific – I want to use the mod wheel to 
control LFO "depth" for vibrato. I'll use the pitch wheel for pitch 
changes and the mod wheel for vibrato for a lead sound, for example. I 
need a VCA for this, correct? The mod wheel CV goes to the CV in of the 
VCA, LFO goes to the VCA in, VCA out to VCO FM input. I can only use 
channel 2 of the 190, because this channel is DC coupled. Do I have 
this right? Is there another way to do this? I'm still trying to figure 
out how to do functions that I take for granted on preset synths.

On Feb 23, 2005, at 9:45 AM, Dino Leone wrote:

> Thanks so much! It does indeed answer my question. I
>  also got a very good answer from Larry (shown below).
>  It seems I probably need both solutions - a simple
>  attenuation (read: home-made panel with a bunch of
>  pots)  and maybe some additional VCAs..
>
>
>  Thanks again,
>
>  Dino
>
>
>
>
>  J. Larry Hendry wrote:
>
>  I would not modify the output of my 380.  You have
>  better options.  If
>  you
>  are just using the VCA as a static attenuator (i.e. no
>  voltage control
>  of
>  the modulation amount) you have two other good
>  options.
>
>  1.  You can change one resistor in the MOTM-300 which
>  will change the
>  gain
>  of the FM circuit.  So, the of 0-10 could be the
>  equivalent of say 0-5
>  or
>  even less.
>
>  2. You could use a mixer to attenuate the sound. Or a
>  reversing
>  attenuator
>  (like the Oakley multimix)
>
>  3.  You could build a simple passive attenuator for
>  this made from a
>  single
>  pot and 2 jacks.
>
>  Larry
>
>
>
>  --- tontaub <egroups@...> wrote:
>
>  >
>  >
>  > If it's just attenuation without any time dependency
>  > you virtually can
>  > do that whereever you want (mostly depending on the
>  > rest of the
>  > patch). If you want to control that remotely from a
>  > let's say MIDI
>  > keyboard you will need a VCA which is controlled by
>  > the MIDI-CV interface.
>  > However - no one stops you to grab the knobs of your
>  > modular when
>  > playing ;-)
>  >
>  > Did this answer your question?
>  >
>  >    Michael.
>  >
>  > --- In motm@yahoogroups.com, Dino Leone
>  > <d_p_leone@y...> wrote:
>  > > I've been thinking about the same issue and I'm
>  > > wondering whether it's necessary to "waste" a VCA
>  > just
>  > > to attenuate the CV of the MOTM380 LFO to feed
>  > into
>  > > the FM of a MOTM300...
>  > > right now I keep the FM attenuator on the MOTM300
>  > > always between 0 and 1 (on a full scale of
>  > 0-10)... so
>  > > I was thinking if it would make sense to modify a
>  > > MOTM380 so that its output amplitude is smaller?
>  > Or
>  > > maybe I'm just missing something here again?
>  > >
>  > > Best,
>  > >
>  > > Dino
>  > >
>  > >
>  > > 
>  > >
>  > > --- Jeff Laity <synthetic@e...> wrote:
>  > >
>  > > > Is this also the method for varying the amount
>  > that
>  > > > an LFO controls VCO
>  > > > vibrato?
>  > > >
>  > > > On Feb 21, 2005, at 3:33 PM, Paul Schreiber
>  > wrote:
>  > > >
>  > > > > You need the "lower" VCA of the '190, that one
>  > is
>  > > > DC coupled.
>  > > > >
>  > > > >  Paul S.
>  > > > >
>  > > > >  ----- Original Message -----
>  > > > >  From: "Jeff Laity" <synthetic@e...>
>  > > > >  To: "'MOTM List'" <motm@yahoogroups.com>
>  > > > >  Sent: Monday, February 21, 2005 4:17 PM
>  > > > >  Subject: [motm] Using Velocity
>  > > > >
>  > > > >
>  > > > >  >
>  > > > >  > How do I use velocity to control a VCA?
>  > What I
>  > > > would like to do is
>  > > > > have
>  > > > >  > the velocity CV from my MIDI/CV converter
>  > > > control the amount that
>  > > > > the
>  > > > >  > envelope affects the VCA. I need some sort
>  > of
>  > > > VCA between the
>  > > > > envelope
>  > > > >  > out CV and the VCA CV in. I tried using the
>  > > > first half of the 190,
>  > > > > but
>  > > > >  > that didn't work so well. Do I need a DC
>  > VCA? I
>  > > > glanced through the
>  > > > >  > MOTM modules, but I didn't see any that
>  > mention
>  > > > this application.
>  > > > >  >
>  > > >
>  > >
>  > >