Hi, i own a 15" dual 2 BL running off a xtr2400 old school orion amp. ATM i'm running 1200watts(4ohms) to my 15. I recently owned a xtr1000, which ran 1000watts at 1ohm to my 15(which is why i have the dual 2 setup, and im an idiot for not getting universal option). But anyways now that i own this beastly amp, i would like to get the most out of it. I am thinking of buying another dual 2 15 BL and being able to wire it to 2ohms OR selling(craigslist) my 15 and buying a new 15 BTL dual 1 of course.

To sums things up, what would be better output, loudness, slammin' balls wise: 2 15 BL'S or 1 15 BTL. And im sorta on a money budget right now...

Greatly appreciate yalls thoughts and suggestions...

I know a guy who hit a 145 off of two fully loaded 12 bl's and I know another guy who a 146 I think or more with a single 12 btl. So maybe 1 15" btl maybe louder depending on your box of course, I have a 15" btl and a box that leaks all over lol and a friend said I might be hitting around 142-145 range.. And it also takes up less space and is cheaper. And would go good with that amp of yours

The BL's would be louder than the single BTL, provided you have the room.