Have to agree with you on this one, Too much rattling going on with the base what you need to grab is a few layers of sound proofing and put it in the trunk and around all the dooors of your car and under the carpet, at the floor of the vehicle once this is done get some sound proofed glass and you can go bigger, my uncle has a suburban that has 6 18's in it a 20 inch sub and a 47 inch screen with all kinds of other added features i dont feel like listening and the first time he was joking around he put it to 6 on the volume and played the music on the first big bass kick it blew out all the glass once it dropped when he bought sound proof glass it sounded a hell of a lot better " he already had sound proof door panels and floor"