Modular Synth Panels

On 7/5/08, Scott Deyo put forth:
>Yup, center detent. The added center tap, when connected to ground, 
>apparently leaves a nice 'dead' center, so no trimming is necessary.
>
>I was thinking of 50K, and I'd guess they'll be around $2 each, but 
>I'll probably get the official quote on Monday. I'm thinking of 
>getting them w/ four PCB pins.

Are there any modules that use such pots??  I guess it might work for 
the Regen control on my Blacet Time Machine.

Anyway, if they were dual audio taper, and didn't have a center 
detent, I would say the center tap was for a loudness control.