Tweeter/Horn Fail Roland KC 550

So I bought this Roland KC 550  back in January and already blew a tweeter.  Not sure what I did but It definitely is not working now.  It must have happened during a show at Vintage Stock in Joplin.  I didn't notice anything until i got home and noticed my drum kit sounded really muddy through it.  I played some music through it and realized nothing was coming out of the tweeter.  I plugged in my whole system last night and heard it come in and out for a second so my thought was that a wire came loose I began to take it apart but no sign.  looked for new tweeters and they are around 40 bucks...not too bad but kinda crazy since i bought this thing 4 months ago. I contacted a guy in Springfield and he said it would be 40  bucks in labor plus the cost of the part...good deal?  Here are some pics  :)