

New IMAX Theaters: Ceiling Speakers Are Now Angled Toward the Audience
I've noticed that in newer IMAX installations, the additional ceiling speakers are angled toward the audience, whereas in older IMAX theaters they were mounted straight down.
Am I correct in thinking that the angled speakers direct more of the sound toward the audience, instead of having some of it reflect off the walls ?
If this is indeed a better design, why doesn't IMAX retrofit older theaters by angling the ceiling speakers as well? Is there a technical reason, or is it simply not worth the cost?