I want to change because when I really turn up my music and straight blast it my sub starts to give off a funny smell. Is it about to blow? all of my hifonics speakers make that smell. I thought that it was bad and that i am about to fry them. I run them for about 2 mins after I first smell the coils then I turn it down for a minute or two then go at it again. and what kind of box, how big and is the goliath quad coil sub sub ne good that i have? is a L7 better? or solo x better? what is a louder sub. or am I about maxxed out in the 12" range. I want to be able to listen to my music and turn it up ass loud as my lil ears can handle it.... maybe I just need one bad a** box