Hi , I made a quick sealed box, for an XXX or XXX's but i dont know what holes to cut, should i cut a 15in hole or 2 12in holes, it is 16in high and 28w and 20''d give or take a few inches, anyway right now i have a 1501bd and i am wondering what setup would be louder, down the road i will buy another 1501bd if i get 2 12's and a ported box, thank you
