Ok, So far I have owned 2 12" mtx 6000's With a coustic amp wich are good amps btw. Sounded decent probably because they were set up in a station wagon : o. Then I had a 15" solobaric l7 with a jbl 1200 watt amp. That was set up in the back of my 91 fifth avenue with a annoying metal firewall : \ Shaked my ashtrays pretty good. But was more of a bang bang bass. Then I got 2 12" l7's with my jbl bp1200.1 amp. Now I want to get 2 12" Infinity Kappa Perfect 12's with some 800 Rms amp probably a vented box? Has anyone heard these I want that boom bass not bang like kicker. Like you ever have a car drive by and you just feel the bass and its not even that loud its just humming : ) That's what I want anyone know what those might be. And dont even say W7's I dont have enough money.