K-44-E drivers
http://www.ebay.com/itm/Klipsch-K-44E-Driver-Speaker-Woofer-Proffesional-Driver-One-Pair-2-/182660240170?hash=item2a8766132a:g:VBgAAOSwhgJZYpPu
K-43 drivers
http://www.ebay.com/itm/Klipsch-K-43-Professional-Speaker-Driver-1-Pair-2-Drivers-Total-/182660224810?hash=item2a8765d72a:g:jTUAAOSwKoRZYoyr