I actually "blew" one of my speakers in my 4x12 the other day! I was messin around with the clean channel on my Triple X head and turned the master volume up all the way and then the channel volume up about half way and got a cool crunch, so I turned it up to about 3 o'clock and got a sweet AC/DC type tone for about 10 seconds before BAM! I hear a pop and then the top left speaker is rattling very bad. So, I take the speaker out, and if I shake it, I can hear something ratteling inside it. What did I do to the speaker (technically speaking)?

It was an Eminence Governor btw.