Warrenh- I'm glad you feel strongly about this, but you aren't really addressingthe situation I talking about. As I pointed out and clarified, I am talking about,
"directly mounting the speaker to the wall (with either dedicated or generic mounts to do this), or placing the speaker on a dedicated shelf not much bigger than the speaker (and firmly mounted to the wall and at a proper height)." Which is different than what you are going on about.
This is not about placing a speaker on a bookshelf with a wall of books. I would also suggest that saying, "Man, how anything can be (sound is the better word) world class sitting on a bookshelf is beyond me." Isn't really very enlightening or helpful. If would be good to know why you feel that to be true. Are you saying that a high-end speaker can not be designed to sound properly mounted on a wall, (or just on bookshelf with books)? What is the basis for your statement? Is there a technical analysis that supports it or have you just heard everything? Are you familiar with all the speakers available and their design goals and criteria? I would really like to know if there is a technical basis for your beliefs. Is there some law of physics out there that says it is impossible to design a speaker to sound properly mounted on a wall? Or is it that since you personally haven't seen or heard one it must be impossible?