i'm building a box for my mk1 toyota mr2 and i need to build a box for 1 10" sub, so it's gotta be about 1 -1.5 cubes. but the challenge is the depth can only be about 4.5 or 5" inches, if anyone knows dimensions that will net me 1-1.5 cubes with only a 4.5 or 5" depth please comment on here.. thanks!