So, I'm in my electronics lab right now and I got thinking about how I have my 4 speakers from my car that i got rid of sitting in the garage still, and wanted to put them to use. So I asked my lab teacher if I could make an enclosure for the four speakers, run the speakers to an amp and car stereo, and power it alll off a deep cycle marine battery to use in my room for my computer or xbox. Basically a sound system that I can proudly say I built. I've been reading up on the internet on how to build speaker boxes and stuff like that, but I'm confused on where I should start. Should I build the system first before making the enclosure, and if so what materials do I need? I know I'll need an amp, wire, the battery, and other things, but I just need to know where I should start. I'm really interested in this, and it will help me take my electronic knowledge further.