I had 2 M class's sharing 900w (underrated alpine a/b powah!) and they just laughed at it. Ive heard, from the local dealer, that people have run almost 1000 a piece to them and have em live to a ripe old age... though i personally wouldnt. I would say about 500 a piece and they shine like platinum grillz.
BTW, I tried to kill em by turning the bass boost and gain to max and pound the **** out of em to give me a reason to replace em with something else... 5 hours later i gave up. Damned low distortion amp...//content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif They still sound great, no smoke or anything. I was kinda disappointed they didnt die.