I have all rockford components too (6x9's in the rear and 6.5's in the front) and they do hit pretty damn hard for just replacement speakers and the highs are off the hook. I can shake all the mirrors in my car and the only thing powering my speakers is my MP3 player. Hell I even turn heads with them. They dont give me all the bass I want but its good until I can get subs (i want a custom enclosure so I can keep my trunk space).