[sdiy] Audio taper pots - shunt resistors and contact resistance

[David G Dixon]

> Cost.

V2164 in quantities is about $1 per chip, and you get four high-quality VCAs
per, about 25 cents per VCA.  With this, the pot doesn't need to be anything
special, since it's just going to be sending DC to the control circuit.
THAT Corp. dual VCAs are a bit more, but still, it's cheaper than buying
fancy pots, and you avoid bringing audio to the panel.