Some years ago a friend of mine since passed stopped into the Klipsch sound lab in Hope Arkansas for an event. In the lab there is a big old table full of drivers and things and crossovers and who knows what all. Kind of like Roy's catch all table for things that were spared the trash can for whatever reason. He mentioned that attendees which my friend was one of could grab things off of there if they wished. So Mr K got these experimental H3 crossovers. I have not tried these out as I have never had a set of H3's to play with nor have I tried them in any other speaker. What these were to accomplish I don't know but Klipsch thought enough of them to build at least one set to try. These are as is and no warranty implied nor any guarantee of function since I have not tested them.

 If you ever wanted a piece of Klipsch history that none of your friends or peers will ever be able to duplicate this is one of the few you will ever see. Personally I have never seen another real Klipsch experimental crossover and I bet you have not either.

  There is only one and you will never see another for any Klipsch speaker I am certain.