Re: JB 500k vs 250k pot
I like a warm bluesy tone, & use 250Ks on all my bridge PU's. Even then JB's are too bright & harsh for me (had several & sold them). However, with a A2, A3, or A4 magnet, they would have a more balanced EQ & not so much of that awful icepick tone.
I can't see using 500K pots on A5 bridge PU's on any of my guitars...bright location, bright PU, bright magnet = shrill & thin. My God, how bright do you need it? But for metal boys it works.
Someone on this forum recently said that Seymour belives that the JB is better with an A2 magnet.
If you learn know how to swap magnets, you can get a much bigger range of EQ & output from your PU's. Otherwise you're probably buying & selling PU's regularly, and that gets expensive.