So my cousin finally started to get to work on his carpc but he's lazy so I'm stuck trying to finish the build in time. Heres my problem I have an IDMAX 12 and it requires a 1.3 cu. ft. box but its been like two years since I have done any math so how do I figure out what l x w x h for the panels to build a box it would be better for it to be deep then tall cause its going in a camry trunk. Yes I know I'm retarded but help a brother out please Also he says I should make it rectangular instead of square for better sound is that true?