There rated 1000 watts they were made as a "sq" driver but get pretty damn loud. Check them out on http://www.soundsolutionsaudio.com/products/trash/
heres a video of them shaking my GF house lol. This is off 750 watts a piece and can handle 1000 very easily even a little more
http://www.teamssaudio.com/video/play.php?vid=194