I suspect many of us have had experience with systems using horn speakers similar to mine. Over the past 15 or so years I have heard about 35-40 systems like this; none have had what I would call outstanding sound. A handful have been very good with some outstanding sonic characteristics, about twice that many have been almost unlistenable, and the rest more ordinary (enjoyable but no more so than many other systems using other types of speaker systems.). Sure, it's easy to say that it's due to setup problems, etc., at shows, but some of these systems have been in homes.
What led to me becoming an audiophile though, rather than just another teenager loving music, was the chance to listen to a friend's father's system with Klipschorns and a LaScala center driven by Marantz tube electronics in a big room (this was in '68 - '70). Another good friend in the mid-'70's had a home built system using University and Altec drivers with horns and Mac tube amps (before they were so avidly sought after); not great sound but outstanding for the cost. I am not inherently anti-horn.