Archive for April, 2014
Tags: Anti-log, anti-logarithmic, effects, guitar, modification, pot, potentiometer, resistor
For my projects, I usually only use audio (log) potentiometers. The only problem with the taper of a log pot is that the last 1/4 of clockwise rotation changes values very quickly. I’m working on a project where a 500k pot has 82k resistors on both outside lugs in series. This reduced the total value to about 200k and the last part of the taper stayed within a few k-ohms of 200. There just wasn’t enough of a difference for the pot to even be used beyond the 3 ‘o clock position. I searched a bit and found some articles on how to change a linear pot to a logarithmic using resistors. There was no information on adjusting a log taper, so I pulled out the DMM, some resistors, and went to work.