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Subject: Re: Living VCO panels for MOTM?

From: "wjhall11" <wjhall@...>
Date: 2010-05-14

Yes - that's my position too - Will is more gung-ho on principle.

But you know - the wave-shapers could be made into a companion 2U module.

HISTORY:

See - I was blissfully proceeding down the 5U path when Will, pouring over Jurgen's LVCO page, spotted Jurgen's mention of wave-shapers - that he (Jurgen) was providing a place that the raw Osc. outputs could be hooked up to waveshapers. Will even found mention in another forum's LVCO thread that Jurgen had considered including waveshapers on the VCO board, but decided to omit them because of space considerations.

So Will and I looked at the MOTM300s and discerned the waveshapers on that, and had a lightbulb moment... why not implement Jurgen's idea using another oscillator's PCB's waveshapers? So we rummaged around and found the MFOS Osc. and figured out, in theory, how to do it.

It's untested, but we see no reason it wouldn't work. We consulted a couple experts, and they concurred... but I'd have to look at our old email to remember exactly who and what.

Probably we should ask Scott Deyo, Scott Juskiw, and Dave Brown to review our idea for a final thumbs-up.

So let's all be forwarned, OK? I mean, it's not like Will and I have built and tested the damned thing... but, again, with some fiddling about the value of the input resistor to the CGS Osc. wave-shapers, it should be a no-brainer. (we've done our best to chart this out on our LVCO page so we wouldn't forget how we thought of doing it)

SO THE 2U COMPANION MODULE:

Another possibility we entertained was to put the 3 wave-shapers in a separate 2U module. We just didn't want to do that.

But what does everybody think of that idea?

The down-side is that the LVCO just lays out better in 7U anyway and if you're using 7U you have the space for the wave-shapers. So why not just do the 7U.

Bill



--- In ModularSynthPanels@yahoogroups.com, Scott Deyo <contact@...> wrote:
>
> I'm on the fence, too. I feel like the 7U is a lot of extra money and
> work, but I will miss the sines if I skip 'em.... sigh...
>
> Scott Deyo
> contact@...
> The Bridechamber
> www.bridechamber.com
> Jealous Edison Record Kompany
> www.jealousedison.com
>
>
>
>
> On May 14, 2010, at 10:12 AM, klstay wrote:
>
> > Sigh, so many modules so little time...
> >
> > I would pick up at least 1 of either, but prefer the 5U sans
> > waveshapers.
> >
> > --- In ModularSynthPanels@yahoogroups.com, Scott Deyo <contact@>
> > wrote:
> > >
> > > I'm looking to put the 5U on the next run, initiating beginning of
> > > June, July shipping hopefully.
> > >
> > > How many are interested in the 5U? 7U? Feel free to contact me off-
> > > list too. I just want to make sure I make enough, and not way too
> > many!
> > >
> > > Scott Deyo
> > > contact@
> > > The Bridechamber
> > > www.bridechamber.com
> > > Jealous Edison Record Kompany
> > > www.jealousedison.com
> > >
> > >
> > >
> > >
> > > On May 12, 2010, at 1:51 PM, wjhall11 wrote:
> > >
> > > > As I recall, a 7U version was generally accepted for the Living
> > VCO-
> > > > plus-waveshapers large-knob implementation, and a 5U version sans-
> > > > waveshapers and with small-knobs.
> > > >
> > > > Will and I put some designs on our Living VCO page here (I don't
> > > > know how to upload these - sorry):
> > > >
> > > > http://www.dragonflyalley.com/constructionJHLivingVCO.htm
> > > >
> > > > At the top of the page is my favorite 7U version... but it has a
> > > > funky grid-offset and is not as well liked by others. The 7U
> > version
> > > > most-liked is the Greg-James/Will Hall version below that.
> > > >
> > > > Between these designs is the 5U version.
> > > >
> > > > I believe the discussion left off where a bunch of people were
> > > > interested in the GJ/WH 7U version, and a bunch of people wanted
> > the
> > > > 5U version but nothing was decided further.
> > > >
> > > > Dave Brown did a very cool 3U version, by the way:
> > > > http://www.modularsynthesis.com/jhaible/lvcos/jhlvcos.htm
> > > >
> > > > Bill
> > > >
> > > > --- In ModularSynthPanels@yahoogroups.com, Eric Frampton <eric@>
> > > > wrote:
> > > > >
> > > > > Was a consensus ever reached about what this panel should look
> > like?
> > > > >
> > > > > Is there an ETA?
> > > > >
> > > > > Thanks,
> > > > > Eric
> > > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>