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

[James Patchell]

A person I once met who made hight end tube amplifiers ($5000 each in 
1980), told me that audio taper pots affect the sound quality, and that is 
why they used linear taper pots....now personally, I suspect he was pulling 
my leg....


At 07:26 PM 4/25/2004 +0100, Steve Ridley wrote:

> > 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

         -Jim
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