Thanks to Henry my fabulous B&W series 550 speakers are toast. He had already pushed in the tweeters which, although crappy, was still repairable. I refuse to believe having kids is the end of having nice things (it’s hard to not think that at times) but now I am thoroughly miffed: the speaker cone of the right main woofer is ripped.
UPDATE: The main woofer has fixed itself by me just playing some music with it but the tweeters are still messed up. I was able to take apart the tweeters and push out the domes as a temporary fix but they will need to be replaced eventually. At least music sounds a lot better now.