So I've decided I'm going to get a sound system for my car. Problem is I know virtually nothing about such matters. I have a decent knowledge of how humans percieve sound, and the mechanics of sound, but as for the equipment, about all I know is that an amp increases the strenght of the signal sent to the speakers, a subwoofer is good for very low sound, a tweeter is good for the high sound, and your typical 'speakers' cover everything inbetween, usually with a bit of overlap.
Can anyone help me out here, and direct me to some good sources, brands, and stores?