Unsound, I don't know. I can tell you this- one of them got "Best Sound at Show" at CES a few years ago, from Jonathan Valin of TAS. He followed up at the succeeding RMAF by saying that the new version of that same speaker (being played at that show) was the biggest improvement he had ever heard in any speaker!
I can add that I had an opinion similar to yours in the past- I thought all horns sucked. Boy was I wrong. Now I am of the opinion that horns, like all other speaker technologies, have unique pitfalls which can be avoided. If this is done they can be as musical or more musical (without coloration) as any of the best of competing speaker technologies.
Given your stance, I have to conclude that if you are being truthful about your position then you simply have yet to hear the speakers I'm talking about.
