just like the headline says i bought this sub new and used it for 6 months and ran it on a 400 rms amp i could not abuse this sub with that kind of amp this sub can take about 750 rms power around 1500 watts i have it enclosed in kickers brand box heres pics of the sub if u cannot view them feel free to contact me http://picasaweb.google.com/nirvana19941/101MSDCF