Z Vex "Box of Rock" pots question

[soupbone]

I was looking at the Zvex "Box of Rock layout".Some of the pots I'm a little confused about..There's 2 100KB pots(volume and tone)..and a 5KC pot (gain).I was wondering what the "B" and "C" letters mean?There's also another one,but it already says what it is(5K Rev. Log)

[scdesigns]

The letters tell you the taper of the pot.

A is audio log
B is linear
C is rev audio log

This just represents the what happens when you turn the pot, think of an x an y graph. On a linear pot the rotation will change the resistance on a constant angle of 45degree on the graph, audio is more of a sweep curving closer to the base line and reverse log is just the opposite.

You can find a great wealth of stuff regarding this (not to sound cliched) on google search. Just try googling potentiometer tapers.

[twabelljr]

Here is a great visual reference of the curves:

http://www.geofex.com/article_folders/potsecrets/pottaper.gif

Link to complete article:

http://www.geofex.com/article_folders/potsecrets/potscret.htm

[soupbone]

Sweet!Thanks guys for the info!

[soupbone]

The letters tell you the taper of the pot.

A is audio log
B is linear
C is rev audio log

This just represents the what happens when you turn the pot, think of an x an y graph. On a linear pot the rotation will change the resistance on a constant angle of 45degree on the graph, audio is more of a sweep curving closer to the base line and reverse log is just the opposite.

You can find a great wealth of stuff regarding this (not to sound cliched) on google search. Just try googling potentiometer tapers.

So,The gain and to other pot are the same pot?

[StereoKills]

Yes, boost and gain are both 5k reverse log pots. Tone and volume are both 100k linear pots.

[soupbone]

Yes, boost and gain are both 5k reverse log pots. Tone and volume are both 100k linear pots.

Aweome!Thanks!