Pot values are pretty much a personal preference. 500ks will be brighter/hotter than 250ks, though the difference is very subtle.
Rics are naturally pretty bright, though, so you may not want the extra treble.
Thanks. So if I understand this properly, higher values in volume pots also increase the amount of treble, just like higher values in the tone pots do.
higher values in volume pots also increase the amount of treble
Yes, sort of.
To be more specific, higher value potentiometers sound brighter at full volume because they preserve more treble freqs in the signal compared to lower value volume pots.
A 500k pot does not increase treble vs. a 250k pot (pots don't add - they only attenuate). Both will lose some frequencies (focused at the higher ranges), but the higher resistance pot loses less.
Gotcha. A 500 is close to 'full throttle bright', where-as a 250 is already taming things down a bit.
Affirmative.
It has to do with the pot setup (serving as a voltage divider) and impedance issues.
If someone really needed the fullest range signal preserved from passive pickups, they could go for a 1 meg or greater volume pot, or bypass pots altogether and wire direct from pickups to output jack. To most folks' ears, the result would sound a bit spiky and harsh, so it is typically worth the mild loss of high freqs in exchange for adjustable volume and tone controls.
