I am using horns big horns at that, they started out as 1977 Klipsch Corner horns. I have since removed all the stock Klipsch internals and replaced them with upgrades, still using the Klipsch cabinets. Now I have 2' BMS drivers and 2' wooden tractrix horns, with an upgraded tweeter, and woofer. They are 118db sensitive, of course I have them padded down to create balance between all the drivers. This enables me to be able to use just about any amp I want, right now it's a Korneff 45 SET 1.5 WPC.
Jay
Jay