opinions on modern horn speakers

I listened to the Avantgarde Duos quite carefully in a friend's system with good associated equip including SET tube amps. Very dynamic, as they claim, and a fundamentally "pure" sound, probably due to needing very few watts. But in the end I could not live with them. There is a very definite residual horn coloration to the sound. Maybe others can ignore this, as it isn't nearly as bad as older horns were, but I can't get past it. It is nearly impossible to design a (practical) wide-band horn that completely eliminates this, despite what some may claim. The laws of physics can't be revoked, only bent.

In addition, the plastic horn cones themselves were significantly coloring the sound due to internal resonances. I know Avantgarde hypes this material, but anyone with any knowledge of materials science knows that their particular approach is bound to have serious resonance problems. It's economical to manufacture, but lousy for acoustics. There are other horns that avoid this problem by machining the horn from solid laminated wood, for example. Vastly superior and also much more expensive.

Lastly, the physical separation between the various drivers was highly audible to my ears, making it impossible to relax into the music and believe the illusion of "being there".

I don't want to sound too disparaging. They do some things spectacularly well, dynamics being at the top of the list. But everything is a compromise, and I personally can't live with the compromises being made here.