Clifford Heath wrote:

-----------------------

Hah! Square-root taper

** Is that what it's called ?

No idea what it's called, but if a log pot can be

called that (even though the intended operation is

exponential, i.e. opposite of log, to compensate

for the log response of the ear) then this should

be square-root, because the actual curve is the

square function.

** At least one source calls it a "square law attenuator" or SLA.

http://www.bernacomp.com/elec/og2/sq...attenuator.gif
A SLA closely follows the formula:

Gain = 40log(position ratio) where closed =0 and open =1

..... Phil