Hi, I was just wondering if a DC lvl 4 18 in ( has a XL cone too) a 6'' cubic box hit harder than 3 kicker L7's in a trunk of a 92 Dodge dynasty. My amp is a kicker zx 1500.1 I just want to knock pictures off walls when I drive by. But more importantly be the loudest out of my friends. I pretty much am already with theses kickers. But I feel like their just sloppy when they hit. Their loud, but I want slamming hard, knocks the air out your lungs type shit. LOL thanks for the comments. Good or bad.