Top Mall-Fi poster. The T in META42. Formerly with Tangentsoft Parts Store
Sep 27, 2001
If you're using a linear pot, that will give the effect you're hearing. With a log pot, the resistance to the input signal drops slowly for most of the rotation of the knob, but it drops faster and faster the farther you turn it. By the last 1/4 or so of the rotation, it's dropping quite rapidly. This matches the way our ears respond to sound, which is why it feels more natural.
There is a way to add a resistor to a linear pot to get a log-like response from it, but it has several disadvantages. Look for "linear shunt" in the archives. You'll find all the old arguments. Look at Headwize as well; I think most of the discussion on this topic happened over there.