I have had my '09 khorns for a number of years and bought slightly used in the same year. When I set them up, I was disappointed with the sound ("muddy", maybe) and rarely used them. When recently setting them back up, I found out the tweeters were "blown"...no current passing across (infinite ohms). I removed them, opened them and found a k77f faceplate (gotta learn how to resize images to post the pics). Not unhappy with Klipsch at all, I'm guessing they are the same, just a different manufacturer?
McIntosh MC 2500 amp and C34V pre-amp.