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This topic comprises 2 pages: 1 2
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Author
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Topic: 70mm Dolby Format 42 & 43 Compatibility Question
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Michael Coate
Phenomenal Film Handler
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Posts: 1904
From: Los Angeles, California
Registered: Feb 2001
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posted 08-18-2011 11:19 PM
CP200.
quote: Scott Norwood Sub output should be normal, however.
I didn't detect any. If what you're saying is correct, then what would explain my lack of detecting any subwoofer content (other than the possibility none had been recorded)?
quote: Scott Norwood There should be no surround at all (even if the loudspeakers are capable of reproducing low frequencies), as the processor should high-pass tracks 2&4 before sending them to the surrounds (and low-pass them before sending to the sub).
And I didn't detect any surround. But...the film cans included a (hand-written) notation indicating "Stereo Surround" (see photo).
![-](http://www.film-tech.com/uploads/uploads0503/219.JPG)
The "Stereo Surround" indication on the cans was interpreted by the projection staff to mean: play in Format 43. (As far as I know, there weren't any sound format indications on the leaders or any printed enclosure.) However, Dolby's master list of Dolby Stereo films lists Highlander as "70" (rather than "70SS"), which is one reason, along with not hearing any surround during the presentation, that I think the title is actually a Format 42 mix. But if it is, in fact, a Format 43 mix, and the staff played it properly, what then would explain not hearing any surround content?
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