Not Klipsch but interesting homemade? in Technical/Modifications Posted April 27 Both Peerless drivers. The tweeter is a classic used in many speakers in the late 70s early 80s like the Polk 10 and many european speakers. The 2" mid dome. There are 2 are 2 way speakers using that tweeter, the problem is then sourcing bass/mid drivers rougly 40 years old to go with them.