Terukio

Okay so, I just got my brothers car as a handy down and I got to keep the 2 12" woofers with an 800 watt amp. (Score) Anyways, my question is (I'm new to all of this but will probably be into it within the week) on the amp there is a left and right input...The radio (I think) is plugged into it. But is it just the sub woofer sound going through those wires to the amp or to all the speakers? Not sure yet, lmk so I know if I can just plug my iPod right into the input or if that would just produce sound out of the woofers and not all teh speakers.