both my ssd 10s are in a 2.5^3 box (after port and sub displacement, before = 3.8^3) off 2kwrms and it wwaannggss //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Does he already have the sub. What car does he have, btw? Also, someone else stated this, why not go with a 12. A 12" ported compared to a 15 ported in the same volume box, the 12" is going to be much more pleasing.