eclipse subs were really designed for small sealed boxes.. im not at all saying they cant be used any other way, but there a very clean sub. and sealed boxes (built right of course) are cleaner. I would be very carefull putting that much power to them.. I get huge headaches putting about 700ish to my 2 because its pretty rediculous.. it was 138 db, with more in it.. i forgot to up the gain (it was on 4) and my door speakers were starting to distort, not the subs.