Originally posted by Feces
Fi audio is pretty damn good shit. I was considering getting the Q's cause I like more SQ rather than SPL.. But whatever floats your boat, honestly I think 2 fi Bl's is overkill.. But 4 18" BTL's? Thats ****en crazy. I recommend sundown as the amplifier, those things unleash every watt as advertised. Lastly you will also need custom boxes for these subs. The volume needed for optimum bass and clarity is defined by the exact measurements specified. A premade box won't work, it has to be ported or sealed and the measurements must be precise.
Holy **** theres to many people here that know a lot about car stereos. I'll probably just go with 2 18's and I'm still keeping the JBl's, cause I love jbl, but anyways Idk yet on an amp I wanna be kicking at least 5,000 watts.