Loudest 300 wRMS sub?

[slicks5150 10+ year member]

here is where you need to do a bit of reading and learning. hope it helps.

http://www.the12volt.com/caraudio/boxcalcs.asp

and there is another good one but I cant find my bookmark. . .its something like bcea.com ???? found it.

http://www.bcae1.com/