Originally Posted by Tom Riddle
I watch a lot of sports and often times after a big play, the crowd noise causes an audio spike and sounds nasty coming through the speakers - highly distorted.
Looking at this again, there is a potential danger here. If the distortion is sourced at the broadcasting end then there's little danger. However, if the source of the distortion is your system, either in the amp clipping when it can't cleanly amplify the signal or the speakers clipping when they can't handle the amp output, or both, then your tweeters could be at risk.
My system has plenty of headroom all around, and I never notice crowd noise sourced distortion. If you hear that distortion regularly with a particular event see if it goes away if you turn the volume down. If it does then the distortion is coming from your system, so either the amp or speakers or both are undersized for the volume you're listening at. If the distortion is still present at low volume then the broadcast is the source and you should be OK.