Can someone explain to me why this works the way it does? I've been asking around, and even my guitar tech, who is otherwise never without an answer for things like this, couldn't explain it to me. It seems to me like it should be the opposite: since 500K pots have higher impedance, wouldn't they be putting more resistance on the signal? Conversely, using 25K pots like for EMGs with passive pickups totally chokes the tone, but by my way of thinking, it should let the most signal through. What am I missing? I'm not amazingly knowledgeable about electronics, so there's obviously something about this I'm misunderstanding, but can anybody tell me what?
I could be wrong but I think it's resistance between the signal and ground rather than the signal and hot, so when the vol's turned up full you have the full 500k resisting the signal going to ground, but if you had a 250 you'd only have 250k of resistance between ground, so more of your signal bleeds off. I'd appreciate someone to confirm this though.