I'm looking to build a box for 1 12" eclipse titanium sub. i will be running it off a hifonics bx1500d. i know i want it ported and tuned low. it's goin' in a hatchback, so i'm not too worried about how much space it takes up. i just want it to get loud and low without soundin' like garbage. i was thinking 2 ft.^3 tuned to 31Hz, but i'd love to hear what anyone else thinks.