2006 DVD release
On September 12, 2006, the original trilogy was re-released on DVD for a limited time (until December 31, 2006). Each film (Episodes IV, V, and VI) is packaged as a two-disc set with the first disc presenting the 2004 Special Edition with remastered THX sound and video and the second disc containing the "original, unaltered theatrical release" of each film as "bonus material".
These original editions are presented as they were first shown theatrically. For example, Star Wars has the 1977 opening scroll (before "Episode IV: A New Hope" was added and other adjustments made for the April 10, 1981 re-issue). Though the original features are presented in Dolby 2.0 Surround audio, the video transfer is derived not from original masters, but from the 1993 Laserdisc transfer (aside from the original Episode IV opening scroll taken from a best available original 1977 print), meaning that the film's 2.35:1 Panavision format is letterboxed into a non-anamorphic 4:3 video frame, even for widescreen television playback. [6][7]
Instead of using the original theatrical sound mixes, the "bonus" DVD presentations use the 1993 laserdisc remixes. However, the Spanish and French audio tracks on the Star Wars DVD appear to be based on the original theatrical mono sound mix for the film, not the Definitive Collection version. Certain sound effects from the 1993 mix are missing (such as all of the "exploding glass" sounds when Luke and Han blast the various cameras and such in the Death Star's detention center), and certain sounds have been added (such as metallic clicks when R2-D2 and Chewbacca press buttons on the Millennium Falcon's holographic chessboard). Luke Skywalker also says "Blast it, Wedge, where are you?" during the final battle on the alternate language tracks, something he only said in the theatrical mono mix. In all other versions of the film, he says, "Blast it, Biggs, where are you?"
The French and Spanish audio tracks for The Empire Strikes Back 2006 DVD also feature a different sound mix than the 1993 Definitive Collection mix. This alternate mix features additional sounds that were not heard on the 35mm and subsequent home video versions, but which were later reincorporated into the 1997 and 2004 mixes. Such sounds include additional R2-D2 beeps when Yoda rummages through Luke's supplies, which are missing from prior mixes, and additional TIE fighter engine sounds in the establishing shot of Darth Vader's Star Destroyer (after Luke Skywalker beheads the illusory Vader on Dagobah), which are missing from the prior sound mixes.