Well, that doesn’t help much as you originally posted to find out what was wrong so it doesn’t happen again. As I mentioned earlier, I had (still have) speakers with two scanspeak 7" woofers in each speaker. Same thing happened, turned it on one day and all 4 woofers dead. Sent them to the dealer for his inspection and he had the manufacturer replace them under warranty. Nothing like that happened again using same amps and speakers. I am sure you have it under control and sorry to sound like a broken record, but before spending the big bucks on completely replacing the tweeters if that is what your are thinking of doing, I would telephone Millersound and see if they can help.