Modular Synth Panels

You are the winner! : )

So I got a quote on the pots, and they should be $1.75 or so each if 
anyone's interested.

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


On Jul 9, 2008, at 1:24 PM, Mark wrote:

>
>  How about one op-amp and 3 resistors?? The input goes to a 100K
>  resistor (R1) and one end of a 100K pot. The output of the op-amp is
>  connected to the the other end of the pot and another 100K resistor
>  (R2). The other end of R2 is coonected to the inverting input of the
>  amp and the other end of R1. The non-inverting input of the op-amp
>  is connect to ground. The input of the next next stage (the output
>  of your reversing attenuator) is connected to the wiper of the pot
>  with a 49.9K resistor (R3). Do I win?? :)
>
>  If the pot has a centertap to ground, it would need to be connected
>  with small resistor. You could build it on a MUUB or CGS
>  mixer/inverter PCB.
>
>  On 7/9/08, Scott Deyo put forth:
>  >
>  >The SEM VCF uses just one op-amp and four resistors, the pot having
>  >the CV straight to one side of the pot, the inverted CV to the
>  >other. Maybe a buffer on the output would be good, but that's still
>  >pretty darn tiny. NanoPolarizer?
>  >Doesn't Peter Grenader's Gizmotron do that, though?
>  >Are those still available?
>  
>