I really have nothing to add here other then afew comments regarding Klipsch and low to flea power tube amps driving them. I remember fondly back in the early 1970s the very best and most entertaining for L.P. playback and F.M. broadcast was a pair of huge Klipsch corner horns.Such a simple system,a vacuum tube receiver Scott or Fisher and a old belt drive turntable.My buddy lived above his parents business in a huge two room loft.Party central is the best discription for his place.His system could really belt!the tunes out...Acouple of years ago I took my David Berning 1 watt per channel output transformerless tube amp down to a local Klipsch dealer. With a Denon top model c.d. player hooked direct to the Berning,the Klipsch speakers were the RF7s.Horn tweeters/midrange and two 10" woffers each.This 1 watt per channel amplifier with its own volume control drove this model of speaker at high volumes,with a fine midrange,easy on the ear treble with c.d. playback and waves of very deep base lines,base you could feel.Jazz,Big Band and Rock were played.The sales staff and owner were impressed.What promted me to take this little flea power amp down to a Klipsch dealer was a magazine reveiws of the RF7s and the Berning amp in Vacuum Tube Valley magazine.The reveiwer had on hand afew differant amps including 300Bs.The berning amp was far and away a better match up for this speaker then the other amps he had on hand.For someone looking to put a system together on a tight budget.Klipsch and tube amplifaction new or vintage will surprise even the snobs.....