How much power do you guys send to your wetsounds 650's?

So this weekend I mistakenly blasted a pair of my 650's with a 1kHz tone while tuning my system. (I thought I had disconnected the rca cables to the amp that powers the 650's but I didn't.) One survived, one did not. I've been running 150 watts to each speaker, but now, after this, I'm wondering if it's too much. They sound great on the 150 watts (well, at least they did) but now I'm wondering if I should move them somewhere else (once I get another one) and get a pair of 8 inch speakers that are rated for more power. So . . . how much do you guys send to your 650's? I'm just wondering whether this was just an isolated incident or if I'll eventually fry the replacement and the one that survived.