Darth Mallwalker said:

Last night I watched sides 2 & 5 of the 1425-84 reissue from 1992, and compared the analog & digital tracks. No doubt about it, the analog track (presumably 1980 theatrical) seems more dynamic to these ears than the digital, which I'll presume to be a remix.
So far I haven't discovered any elemental differences, alternate dialog takes or the like, but I'm 98% certain they're two different mixes.

Compared to when I wrote that in June, today I'm leaning the other direction.
Got a hunch the PCM track on the '92 reissue is exactly the same as the analog track: CX-encoded. They sound different because the player is [correctly] not trying to decode the PCM. (Digital soundtracks aren't supposed to be CX in the first place.)
Whoever made the new glass master in '92 took a lazy shortcut methinks.
Would explain why the PCM sounds much less dynamic.

Anybody heard of a software CX-decoder ?