I remember hearing that Lucasfilm required certain minimum A/V standards for theaters to be allowed to screen Phantom Menace when it released in 1999. I know for a fact that the single-screen theater in my hometown had to shell out for some upgrades prior to the release. However I’m struggling to find much information about this on the internet. I found this quote:

“Phantom Menace” is getting a far smaller initial theatrical release than your typical blockbuster would usually get, because exhibitors must have a projection system, sound system and environment that meets Lucasfilm’s standards. Lucasfilm wanted to make sure this film was shown with the best possible projection and sound, in order to take full advantage of the film," - Paul Dergarabedian (http://www.cnn.com/SHOWBIZ/Movies/9904/21/lucas.laws/index.html)

Are there any details about the specific requirements?