Hi guys -
I know this issue is probably ultimately sleeping until Scott Deyo has time in his line-up for fabrication, but looking back over Dave and Will's work here, I made a change to Will's 3U design to come closer to what I would want (FWIW).
It has 3 input jacks, but no input attenuation. (this means an input mix buffer thing and an inverter built into the little breadboard area on the PCB a la Dave's idea.) It has a LINK output for ganging a couple resonators together.
Image:
http://www.dragonflyalley.com/images/JHpolymoogResonator/JHPolymoogResV4vIIwidth1-92in.jpgI like Dave's 2U design and it will probably be best for the majority of us. My own preference is for the bigger knobs - just 'cause I prefer them. My hope is that Scott will be able to make both versions.
Thanks, All.
Bill
--- In ModularSynthPanels@yahoogroups.com, "wjhall11" <wjhall@...> wrote:
>
> OK, Mr. B., in that case, the output to the MIX jack should be re-inverted, right? We could use one side of a dual op-amp for the input mix inverter and the other side to re-invert the summed input for the MIX jack.
>
> On the PCB drawing, Mr. Haible has the three pads labeled "DRY" and, because his prototype photo has a pot there, Dad and I decided it must mix input and the resonator output - so when I sketched out the panel, I called it "MIX". If, when we see the schematic, it bears out that this is what that control actually does, what would you think of re-naming the output you're calling "MIX" to something like "LINK OUT" to avoid confusion?
>
> In my latest 3U interpretation of your 2U interpretation of my/our interpretation of a guess, I call the two outputs LINK OUT and RES OUT. Just an idea. If we could but say these in Latin, I'm sure, as Greg says, it would be so much more impressive.
>
> Will
>
>
>
> --- In ModularSynthPanels@yahoogroups.com, "djbrow54" <davebr@> wrote:
> >
> > Yes, a mixing inverter. I don't know what the front end looks like yet to see if it can be expanded. If not, there is a breadboard area on the PCB which will eliminate the need for a second PCB to add an op amp.
> >
> > Dave
> >
> > --- In ModularSynthPanels@yahoogroups.com, "wjhall11" <wjhall@> wrote:
> > >
> > > Yes. That's good. Are you imagining a mixing inverter thing, Mr. B, or just the inputs being tied together somehow?
> > >
> > > --- In ModularSynthPanels@yahoogroups.com, "djbrow54" <davebr@> wrote:
> > > >
> > > > Mix is the summed output of the inputs. Out is the output of the resonator. I was thinking that Mix out might be handy if you wanted to cascade two resonators or run them in stereo.
> > > >
> > > > On the other hand ... as people have noted, you add another attenuator and have three inputs. I put a picture of it on there as well.
> > > >
> > > > Dave
> > > >
> > > > --- In ModularSynthPanels@yahoogroups.com, Scott Juskiw <scott@> wrote:
> > > > >
> > > > > I like it. I was hoping to build this into 2U.
> > > > >
> > > > > What's the difference between the MIX and OUT jacks? Is the MIX jack
> > > > > after the MIX pot and the OUT jack just the straight resonator output?
> > > > > If so, you could have 3 inputs by getting rid of the OUT jack. Bottom
> > > > > half of panel would be like this:
> > > > >
> > > > > IN1 pot, IN2 pot, IN3 pot
> > > > > RES pot, PASS MODE switch, MIX pot
> > > > > IN1 jack, IN2 jack, IN3 jack, MIX jack
> > > > >
> > > > > Just throwing out ideas.
> > > > >
> > > > > On 28-Aug-09, at 1:40 PM, djbrow54 wrote:
> > > > >
> > > > > > I used your layout design and did a 2U version with small knobs. I
> > > > > > added a second input and attenuators to make for a more
> > > > > > symmetrical layout.
> > > > > >
> > > > > > http://modularsynthesis.com/jhaible/resonator/polyres.htm
> > > > > >
> > > > > > Dave
> > > > > >
> > > > >
> > > >
> > >
> >
>