I have a btl18 in a 7.5 cube portted box tuned to 32 hz in my 1999 suburban and it's got the cooling option only, and it's D2 so .5 ohms or 2 and I have it at 2 ohms on a kicker zx1500.1. My question is what amp would push this better? And should I wire it to .5 ohms with new amp? People feed 3-4 thousand watts to their fully loaded btls but mines only got the cooling, sorry for the long post just wanted to give exact info on what I have, thanks alot!