Who to believe, let me see: Steve Hoffman, one of the most respected names in the audio world . . . or Rick McCallum, Lucasfilm sycophant extraordinaire?
This is even a question?
Let's clear up some facts here. Contrary to what some seem to believe, Star Wars actually had an incredibly powerful sound in its original form. Whenever anyone disparages it in that way, their comments only apply to the 35mm versions of the soundtrack. Due to technological limitations, the frequency response and dynamic range of the stereo and mono mixes was indeed quite limited, and since the vast majority of theatres had prints featuring these tracks, it's not surprising that the SE mix would be received positively in comparison. But that's not what I'm talking about: I refer specifically to the six-channel mix that was designed for use on 70mm prints. Only a few of these were ever produced, played in high-end theatres in major cities, but it was by far the best-sounding version of the film ever made.
I shall air a comment from Mike Minkler, who worked on the audio:
" . . . it was the birth of baby boom. The 6-track was devised by Steve Katz, who was the Dolby consultant on the show. When we were predubbing reel 1 spaceships, we couldn't get this big thunderous low end that we wanted on the pass-by. We were going to do what we called a “Todd spread” back then, which was to record a left, center and right, and a surround — then fill in channels 2 and 4, the left extra and right extra, with information from these adjacent channels. But Steve said, “What if we used 2 and 4 for boom only, the low-frequency information, and we'll use full-range speakers.” Well, we didn't have them; we had the Altec A4 speakers, and we put low-frequency material in there as much as we could to enhance the spaceships. And every time there was an explosion, there was a sweetener that was cut for those two channels."
http://www.mixonline.com/recording/interviews/audio_mike_minkler/index.html
The entire concept of including separate tracks for bass content in fact originated with the 70mm version of Star Wars. It was the first movie that ever had such a mix, and people fortunate enough to have seen it this way speak fondly of the Star Destroyer's opening flyby in particular. Sure, there were still limitations involved, since most theatres wouldn't have installed dedicated subwoofers until later that year, and the rear channel was monaural since stereo surrounds were not yet included in the 70mm format. We're not talking about the kind of enormous, ubiquitous bass found in recent films like The Dark Knight, obviously—but it was definitely there, and it was definitely strong. To say otherwise is to just demonstrably false.
Unfortunately, none of this played any part in the creation of the SE, because most of that mix was taken from a 4-track master and then dynamically limited, robbing it of much of its power. The bass content was created over again from scratch (the 4-track master didn't have it), often to a decidedly lesser effect. The beginning in particular suffers, as the Star Destroyer's bass is only barely audible and could not be called "thunderous" (to use Minkler's term) by any stretch of the imagination. Other parts of the SE do have more punch, but most of these correspond to places where the movie was changed and new elements added.
One need only listen to the 1993 laserdisc track, which was sourced from the 70mm printmaster, to hear the enormously powerful dynamic range of the original. Compared to that, the SE is a tinny, shrunken, and overly-hissy shadow of what the film's real sound is supposed to be. Why they didn't base it on the 70mm version is something I can't for the life of me understand, but I can only surmise that everyone at Lucasfilm somehow forgot that it even existed. But then, seeing how allergic to quality they've become, perhaps it's not surprising that they would think something so obviously inferior was really an improvement.
To be fair, some parts of the 1997 mix do sound pretty good. Certainly it's a million times better than the garbage remix we got in 2004. But on the whole, the 70mm version is so far ahead of it that there's really no comparison.
Thanks to HH, it turns out that's easy to do! But I'm sure Rick might be right about other things.
Keep in mind, of course, that my version is only a recreation, not the real thing. But I do think most of it is very close to what it was. ;)