Hi Sushi,
I didn't mean to imply that all horns sound bad. With careful electronic equalization applied, some horn-loaded systems can sound very good. I'm thinking of some of JBL's custom Synthesis systems for homes (very expensive).
As you may be aware, all of the speakers behind the screen in large Dolby and THX cinemas are big, horn-loaded systems. Otherwise, it would be impossible to fill big movie theaters with high-volume, low-distortion sound. And the sound in lots of theaters can be quite good. So all horns don't have to sound bad. It just costs a lot to get them sounding reasonably decent!
But to answer your question, I've found Klipsch, Tannoy, and other domestic horn-loaded speakers to be very colored compared with the best non-horn-loaded designs. I've never heard Triads.
Regards,
