[sdiy] "Audio" vs. "Log" taper

[Steve Ridley]

> I have a theory why HiFi amplifier manufacturers often use a lin
> pot instead of a log pot: 

Another theory is that the two tracks in some makes of
linear pot track each other better than in their log or audio
pots, so the balance doesn't change as the volume is 
adjusted.

Remember too that the effective law of a pot depends on
the load the wiper sees.  A linear pot will only give an
accurately linear law into a high impedance, and loading
it appropriately can give an approximation to a log or
audio law.


Steve