Hi everyone. I've got my BS in physics, but I don't know much about electrical engineering. I've had a passing interest in do-it-yourself audio equipment for quite some time (designing and building your own speakers and amplifiers), and I've finally decided to get serious about it. So, it seems that learning some electrical engineering would greatly benefit me. I know what the various passive components are (inductors, resistors, capacitors, etc.), and I'm vaguely familiar with transistors and diodes, but I'd love to know more. I still don't fully understand why the various LRC filters function the way they do, and designing a discrete audio amplifier at the transistor level is like black magic to me, as are power supplies (I do remember discussing bridge rectifiers back in college, but I've forgotten the details). I'm not sure which courses in electrical engineering would benefit me. (Also, I'm not opposed to branching out a bit in EE, if an area sparks my interest.) I assume you typically cover the behavior and characteristics of LRC filters in a Circuits class? What about designing a power amplifier? (I know there are entire textbooks just on this topic.) Learning a bit about DSP would also be cool. (As a side note, I've even debated returning to college and getting a full bachelor's degree in EE, since the employment prospects look more promising. So it's definitely a field that interests me.) I'd greatly appreciate any input you can provide. Thanks!