I can't comment on the 2004 DVD or BD mixes as I've never heard them; I'm a little obsessive about "originality" and would always choose to watch, for example, Jaws or The Terminator with the original mono as opposed to a multi-channel mix.

I can't see how anyone could not be blown away by the power in hairy_hen's 70mm recreation for Star Wars. You should particularly listen to the dynamic range during sequences such as the Falcon's escape from Mos Eisley, or the section from Ben Kenobi's demise to the dogfight with the sentry ships .

That said, when listening to hairy_hen's purist mix for Harmy's despecialized ROTJ, I noticed a significant amount of bleeding of dialogue from the centre channel into the front left and rights. I say significant because, if I play the 1993 mix through my receiver in Pro Logic II mode, this bleed is much reduced. I thought that the 5.1 mix was created from a Pro Logic II upmix in software, so this is surprising.

My receiver has several settings to customise the sound stage when using Pro Logic II upmixing: "Dimension" (adjusts the soundstage towards either the front or rear), "Center Width" (adjustment of the center image spread across the three front speakers) and "Panorama" (extends the front stereo image to the surround channels). I think these options are fairly standard on DPL II receivers, however, these are only available on my receiver in "music" mode, not in the "cinema" mode which I use to watch films.

Not sure if it is explained elsewhere, but h_h can you expand on the method you used to convert the 2.0 into 5.1? Did you have control over the "centre width" option?