I know, this is like the 100th SM10 thread and my 4th. I just got these, and had been playing them on the 10th notch (out of 16) so fairly loud, the sub is at about roughly 70-80% of its max, I didn't want to turn it up all the way I'm terrified of blowing speakers, always super-cautious. After about 2 hours of shuffling through iTunes I noticed in-between songs they were buzzing REALLLLLLYYYY loud, I could hear it from the room over! Definitely never heard any speakers buzz this loud, idling or not! Also the back of the subwoofer is really hot too, but I figured that wasn't too abnormal?! Are either one of these things to worry about? I don't feel like I should have to turn off the speakers after I'm done listening to them..