i have 2 kicker cvr 12s n there powered by a 420 momo block MTX audio amp but when i turn them up they barely sound good they just move up in down alot but don't thump and i have played around wiht the EQ, gain, and frequence on the amp and on the deck and if i turn it up a little more the subs sound like there poping like a balloon pops. there not blown this is the first time i have used them there connected right from what my dad says and he has some what of knowledge in car audio his suburban sounds great so i'd think he knows what he is talkin about. the amp isn't anywhere near powerfull enough to blow them, anyone know what the problem could be thanks.