Modular Synth Panels

I believe the prob w/ normal center-detent pots, is that w/ 20% typical 
pot tolerance, you need to place a trimmer in there, to make sure 
center is really 'off'.
With a center tap to ground, the center is 'bigger', and should 
definitely be 'off'.
Or something.

Someone else may not design circuits around these pots, but they'd work 
well in my optic cv processor, and an other modules down the line. I'll 
hog 'em to myself!
; )

Cheers,
Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com


On Jul 6, 2008, at 11:22 AM, Mark wrote:

> On 7/6/08, Samppa Tolvanen put forth:
>  >On 7/5/08, Mark <yahoogroups@...> wrote:
>  > >
>  > > Are there any modules that use such pots??
>  > >
>  >
>  >Maybe there WOULD be, if these were commonly available?
>
>  Possibly, but as awesome as Bridechamber is, I doubt anyone is going
>  to design or re-design modules just because Scott has a certain part
>  available :)
>
>  >This thing is simplest thing ever to expand Your synthesis
>  >possibilities. With a simple dual inverting opamp buffer, it provides
>  >anything between the original signal and the inverted signal with 
> true
>  >null in the middle. You maybe lose half the scale pot gives (if You
>  >use dedicated inverter ect.).
>
>  While I agree that reversing attenuators are useful, and I have them
>  in several places in my modular, they do not require a center tap.
>  (Btw, it doesn't require a dual op-amp. The MOTM-440 does it by
>  putting the pot in the feedback path of a single inverting amp).
>
>  The reason I mentioned the Blacet Time Machine is that afaik the
>  regen function uses a center-detent pot in Blacet format. Its input
>  is hardwired into the circuit, so you just can't pull the plug if you
>  want no input. Although it doesn't have a center tap, and I don't
>  know offhand if one would work.
>  
>