I switched tweeters with the other speaker and they work fine.I also switched speakers and the speaker in question still has dead tweeters and the wires are all connected and soldered to the board on the crossover with no visual damage or cracked solder.I hope I don't have to send this speaker back to the factory as that would be a serious PITA.the only thing that makes sense to me is somehow the crossover went bad.I e-mailed Amie but they are most likely off for a long holiday weekend.