On Tuesday, January 23, 2018 at 6:09:10 PM UTC-5, wrote:
I have always known pots to either have an audio or a linear taper.
I'm looking at a schematic which has numerous pots. Some say they are "W
taper", the others say they are "K Taper". I have not seen them listed
in this way, ever.

What do these letters mean?
Are there other letters used?

Anyone have a chart that shows and explains them?

W-taper pots are center-detent (center-null), typically used for tone controls, where center is Null.

K-taper pots typically will show a number ahead of the K, meaning *number* K-ohms.

K-pots may be linear or audio. W-pots are typically linear.

Your questions are getting better and better!

Peter Wieck
Melrose Park, PA