idk i think that was just a trick by the camera because i have a 15" mtx 9500 in my trunk and when i was runnin a 1000 watts on it my trunk and rear quaters would shake nd rattle too but they never looked like that...all i know is if that is real those subs are gunna be louder than u can use. my frineds would complain about mine...like if u tried to drink pop while it was beating u could feel the pop fizzing in ur throat nd it was hard to swallow.