<font color='#000000'>Yes, there is no doubt that properly mastered LD sound is much superior to DVD sound - especially current Dolby Digital 5.1. I find in nearly all instances that DTS sounds far better than D.D. because DTS has a higher bit rate (read resolution). Dolby Digital has lots of slam, but no finesse when it comes to music, especially soaring symphonic soundtracks.
Most LD's were recorded in analogue with CX noise suppression and the A/D conversion was very close to redbook CD specs. As I replace some of my LD's with the "superior" DVD format (granted, the DVD picture is usually, but not always, better), I have found the sound on DVD's lacking. It is just a matter of craming to much info on a 7" format ( LD's were 12"

and Dolby Digital is so far from redbook CD it isn't funny.
As I have a very large collection of LD's, I have the fortunate option of comparing the LD release to the DVD release.
A few observations:
Early DVD release of Appocalyse Now! versus the LD release:
No comparision - the DVD sound is flat and uninteresting - the LD even has better bass and a humongous soundstage. (Note: I did not try the lastest DVD release, Appocalyse Now! Redux - to scared to waste more money!!).
The DVD release of the 1925/29 Phantom of the Opera. Again, flat, uninteresting sound, poor bass, no soundstage - the LD version blows it away.
The first DVD release of The Committments - worse botch job yet - a fabulous vibrant soundtrack on the LD disappeared into thin air on the DVD issue. Hopefully, the new DVD release will rectify this and give as a choice of a DTS soundtrack. I am a little worried about a botch job in 5.1 - keep the band up front where it belongs!!
The DVD release of Hello, Dolly! - no depth - no soundstage- dead highs - how could they do that to poor Ole Satchmo singing one his best ever songs!! Shame on the sound?? engineer.
The DVD release of the Imax The Dream is Alive. This was a landmark LD demo disc - with incredible bass and treble (especially the hot gases colliding with the atmosphere - the crackling noise of the tremendous heat demands unbelievable power from an amp and the tweeters will quickly fry if the amp can't deliver). Again, the DVD sounds flat, although the bass isn't bad. I read of a retail outlet being a little to exuburant with the volume control when playing one of the LD rocket launches, and all the stock on the wall shelves of the adjoining drugstore began to rain to the floor - a man made earthquake!!
I will probably spring for the new Committment DVD. I will be doing a close comparison of the sound and will report. What does make the DVD sound interesting is that they do current interviews with the cast, but apparently there is not an interview with the lead female singer , a real shame.
AL</font>