Hello all, I'm starting an undergraduate research project at my University regarding guitar pickups and their geometry. To begin, I'm first trying to understand the pickups and the circuits they are connected to, pre-amplifier. Please understand I have very limited knowledge in circuits and almost everything I've done has been basic DC circuits involving resistors and capacitors. I'm doing the project to expand my knowledge in the subject independently (and because I'm building an electric guitar from scratch, so it ties in nicely). The circuit I'm looking at now is off of a simple Fender style Bass. I found a schematic on the internet. [PLAIN]http://www.axiomatic-music.co.uk/acatalog/PBassSchematic_compressed.jpg [Broken] Can someone help explain to me how the tone control works when it is in parrallel with the volume knob. It seems like some frequencies would escape volume change. While typing this, I thought of an error I made when using the function generator, so that might be the cause of my confusion. Regardless, I wanted to post the question to get some input from more experienced people. Sorry if I didn't word it clearly, some things got deleted when I realized the mistake I had made. Thanks!