It depends on which horns: There are Lowthers, Klipsch, and Avante Garde. All are very efficient, but very different in sound. I used to own a few pairs of Klipsch speakers. They were very dynamic and terrific for rock music. My tastes have changed and so have my speakers. I now listen to mostly jazz, classical, and vocals and changed to Martin Logan speakers. I have listened to several models of the other brands of speakers. I personally do not care for the Lowthers, but there are others that really like this sound. It's a single driver system, so there are no associated problems with cross over, but it just never really sounded right to me--I don't really know how to better describe it--maybe it was just boxy sounding. The Avante Garde speakers are the best horn speakers I've ever heard and don't really sound like horns, but they are efficient. This gives them the added benefit of being able to be easily driven by SET tubes--a really terrific and intoxicating sound. Unfortunately, they are priced accordingly--rather expensive. The new Klipsch series I don't care for--but if you can find an old pair, and listen to mostly rock music--they are very good.
