Im really glad that someone else is saying this. The single most important thing in audio IMO is the placement of the speakers and the listening chair. If you get that right you can have really great sound if not then....
BTW Stirling is an old friend and a real joy to talk too and of course work with.
I truly believe this is very much misunderstood and the reason there is so much argueing. When you walk into a great system set up there is nothing to argue but rather just the ability to enjoy music. Whether its horns or cones or panels it will sound like music from thre one can choose the rest.
BTW I have been to many factories and their soundrooms and the overwhelming majority of them don't have a great set up either.
I was thrilled in Munich since the Gobel factory really did it great, and the rooms and systems are a real representation of the sound of the speakers.
When you are done please invite me