Okay ive got my 2 10s in a crappy prefabed box i bought just so i could get it in the car. They are rated at 4omhs so im thinking of adding a 3rd sub so i can run it all at 2.65omhs. I did some searching for the optimum size of the box for these subs, but i couldnt find a straight answer. I want the box to be sealed. Anyone got any plans or specs on the size it needs to be?