mr def,to stop chuckaling refer to eminence kilomax 15A,rated at a true 1,250 watts rms! these cornerhorns as well as klipschorns,do in fact use 1/2 inch in the folded basshorns,as well as soom 3/4 inch. you suspect wrong,13 pair have been produced to date,why do you people think klipsch is the only company to make cornerhorns,klipsch,speakerfactory,speakerlab, electrovoice,eclipse,and others have produced cornerhorn speakers over the years,cheers mwb157.