Instrument Amplifier Fix

[Ty34er]

Hello everyone!

 

Alright, so I have a cheap instrument amplifier that I'm fixing up and making a new case for. It's a three knob amp, with one each of volume, tone, and gain. For some reason, they are all B100k pots. I'm already replacing the volume pot but I'm not sure about the gain.

Should the gain be a linear or log (or even anti-log) pot? I think I found one post somewhere that said log, but I wanted to ask the only forum I've actually gotten help on before.

Thanks everyone!

(If this is the wrong place for this, let me know and I can move it over.)

[BobVonBob]

I believe audio knobs tend to use what's called an "audio taper" potentiometer, it's a log potentiometer, but modified from a true logarithm to more closely mimic how our ears perceive sound. 

[Unimportant]

3 hours ago, Ty34er said:

they are all B100k pots

The "B" tends to indicate linear taper.

[Ty34er]

Yup, I know that much. Since sound is more log than linear (and because I broke the pot), I'm replacing the volume with a log potentiometer. I know tone can be linear, so I don't need to replace that. My issue is I'm not sure if gain should be log or linear.

[tikker]

Depends on how much effect you want it to have I guess. Though a linear pot will hardly give you any gain control I think. I'd go with a logarithmic one.

Never really thought about it though, just seems like the most logical choice to me as you'll have a larger range of values accessible