need help on a good box design!

[caraudiolove]

i dont know much about subwoofer boxes this would be my 2 box, I like to listen to the lows and i was wondering if i could make interchangeable port

30W
30L
15H
2 12" kickers and they play low!

[pro-rabbit]

You have more then enough room,and you can make a changeable port. There are several options depending on your budget for supplies and how you want it to look over all.