inputs.text: sounds great - bought sub march ported enclosure rt powering using alpine pdxm12 amp power output 1200w rms ohms speaker rated little power going hurt anything head unit alpine 138bt prefer go manufactuer mainly amp sub not head unit said lets talk sub arrived quickly not damaged heavy size magnet installed local audio shop pulled parking lot turned pleasantly surprised power bass not turn way break bounce house people say dont need break sub see movement cone broke one hasnt break broke blasted thing loud like people come apartments see hell going loud sound quality great since ported box bass booming tight wanted could always get none ported box sure bass would tighten like sub much want another one problem jeep isnt big enough thinking getting type x would buy sub make sure check ohms 2 4