Modular Synth Panels

Besides the 7U FPE template for the Living VCO panel on Will&Bill's website, are there any other FPE templates for this floating around out there? Or any plans in the near future for a Bridechamber run? I'd do one myself, except that I don't trust my dimensional abilities, and mistakes are hella expensive...

e

Will make one this year, early I hope...

Make sure you check out Dave Brown's site for this one - he's made a whole bunch of designs for this one.
http://www.modularsynthesis.com/jhaible/lvcos/jhlvcos.htm

--- In ModularSynthPanels@yahoogroups.com, Eric Frampton <eric@...> wrote:
>
> Besides the 7U FPE template for the Living VCO panel on Will&Bill's website, are there any other FPE templates for this floating around out there? Or any plans in the near future for a Bridechamber run? I'd do one myself, except that I don't trust my dimensional abilities, and mistakes are hella expensive...
>
> e
>

My final design is on that page. Down in the panel section is a link to various concept designs and FPE files. I did several for different potentiometers which require different clearance at the top. I never built any so that would be worth double checking.
http://www.modularsynthesis.com/jhaible/lvcos/jhlvco_panels.htm

I do like the compactness of the final panel and I seem to be in the minority for coarse and fine controls but they give me all the flexibility and responsiveness I require.

Dave

--- In ModularSynthPanels@yahoogroups.com, "Steve" <sduck409@...> wrote:
>
> Make sure you check out Dave Brown's site for this one - he's made a whole bunch of designs for this one.
> http://www.modularsynthesis.com/jhaible/lvcos/jhlvcos.htm
>
> --- In ModularSynthPanels@yahoogroups.com, Eric Frampton <eric@> wrote:
> >
> > Besides the 7U FPE template for the Living VCO panel on Will&Bill's website, are there any other FPE templates for this floating around out there? Or any plans in the near future for a Bridechamber run? I'd do one myself, except that I don't trust my dimensional abilities, and mistakes are hella expensive...

My blurt:

The Uber-LVCO 7U panel on our site is a result of our compulsive leaning toward the ridiculous. It assumes including wave-shapers (fashioned out of MFOS VCOs) for the JH VCOs, and the counting dials, and standard large MOTM knobs throughout. Unnecessary, really. It also reflects a feature Will came up with that would allow linking and unlinking the individual VCOs from the "Driver" circuit.

And the size and complexity of our panel design, of course, also makes it very expensive - about $325 from FPE. Waiting for a panel is part of what's delayed our build - other factors being having the time to do it and buckaroos for the parts (it's a relatively expensive thing to build - although not so much, if you divide the expense by 3 to get an idea of how much per VCO. I think this comes out to around $325 per VCO including the FPE panel and assuming pricey Bourns pots throughout).

AS I recall, the panel as last proposed for Bridechamber consideration, included the counting dials and wave-shapers, but didn't have our kooky lines on it.

Also, as I recall, the main thing I liked about the counting dials on my Synthi-A was their cool-ness... it was 1981, after all. Truth is, the pots were so unstable that, in retrospect, I'm sure the dials were superfluous anyway. <g> In our design, we retained them for - well - yeah - coolth.

Eventually, We'll implement the module in our ridiculous way because we have a very specific idea of how we're going to use it completely pimped-out and all.

But this all said above, almost by way of a disclaimer - FWIW:

Dave's design is far more pragmatic. I'm sure the course / fine tune knobs idea is as good if not better than the counting dial idea. The small knobs make the gadget fit into less space. He doesn't have the waveshapers in there... they're not in the original JH circuit anyway. Dave's panel reflects a link-unlink feature he's calling "track," (right, Dave?) but there's an issue about how the PWM CV links to the VCOs that I'd have to re-look at to understand how Dave's implementation handles it - Idunno - our aim was to be able to use each VCO completely independently. But these are details. Looks great.

Bill (and Will)

--- In ModularSynthPanels@yahoogroups.com, "djbrow54" <davebr@...> wrote:
>
>
>
> My final design is on that page. Down in the panel section is a link to various concept designs and FPE files. I did several for different potentiometers which require different clearance at the top. I never built any so that would be worth double checking.
> http://www.modularsynthesis.com/jhaible/lvcos/jhlvco_panels.htm
>
> I do like the compactness of the final panel and I seem to be in the minority for coarse and fine controls but they give me all the flexibility and responsiveness I require.
>
> Dave
>
> --- In ModularSynthPanels@yahoogroups.com, "Steve" <sduck409@> wrote:
> >
> > Make sure you check out Dave Brown's site for this one - he's made a whole bunch of designs for this one.
> > http://www.modularsynthesis.com/jhaible/lvcos/jhlvcos.htm
> >
> > --- In ModularSynthPanels@yahoogroups.com, Eric Frampton <eric@> wrote:
> > >
> > > Besides the 7U FPE template for the Living VCO panel on Will&Bill's website, are there any other FPE templates for this floating around out there? Or any plans in the near future for a Bridechamber run? I'd do one myself, except that I don't trust my dimensional abilities, and mistakes are hella expensive...
>

I wanted to be able to use all three oscillators independently so I chose which controls and which inputs should affect all or be independent per VCO. I chose PWM and Width to affect all three VCOs to minimize panel space. The width control and PWM inputs are simply paralleled to each VCO.

I chose 1V/Oct and FM to be affect each VCO independently but normallized the input jacks so they could affect all three together. I also eliminated Detune for VCO1.

Since the input modulation of vibrato and portamento can be bypassed for VCO2 and VCO3 through their separate 1V/Oct input, I needed to make sure the gain through the modulation circuitry was 1X, so I used 0.1% resistors for U11B and U12A

I did add a mix output and independent level controls for each VCO. I use that feature a lot.

The wiring diagram is shown on my page as well as the details of my modifications. I remember the link/track conversation but am thinking that was for the Polymoog Resonator module. I don't exactly recall now.

Dave

--- In ModularSynthPanels@yahoogroups.com, "wjhall11" <wjhall@...> wrote:
> Dave's design is far more pragmatic. I'm sure the course / fine
> tune knobs idea is as good if not better than the counting dial
> idea. The small knobs make the gadget fit into less space.
> Dave's panel reflects a link-unlink feature he's calling
> "track," (right, Dave?) but there's an issue about how the PWM CV
> links to the VCOs that I'd have to re-look at to understand how
> Dave's implementation handles it - Idunno - our aim was to be able
> to use each VCO completely independently.
>
> Bill (and Will)

I appreciate the thorough discussion of all the layout options of this module. I have 2 PCBs to build and I'm still considering how to lay out the front panel. I'm going for 5U Moog format with regular-sized knobs, so it'll probably be quite wide. No layout file yet, though.

Sent from my Verizon Wireless BlackBerry