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This topic comprises 2 pages: 1 2
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Author
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Topic: DTS Backards Compatibility
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 01-19-2002 05:00 AM
OK, this may be a stupid question for me to ask, but I am going to ask it anyway.Is an old DTS Stereo disk (such as the orginal Jurassic Park) compatible to DTS-6 units? Many moons ago, I remember someone saying it is not.
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Adam Martin
I'm not even gonna point out the irony.
Posts: 3686
From: Dallas, TX
Registered: Nov 2000
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posted 01-19-2002 11:27 AM
There was an audio level change a few years ago. Technically, you need to recalibrate your SPLs to the old levels to play a "vintage" disc properly.There have also been dts.exe file updates built into the discs. Something about automatically flash updating the one in ROM, but I'm not entirely certain about how this one works, or if you can "backwards update" your unit playing a vintage disc. (And then I realized that Paul is talking about the DTS Stereo discs and not the early DTS Digital discs. *slap* Wake up!)
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Brad Miller
Administrator
Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99
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posted 01-19-2002 02:46 PM
Discs labeled "6 track" are fully compatible with today's dts players.Discs labeled "Stereo" are completely useless unless you need drink coasters. The dts units you are familiar with today are considered "6 track" and require 2 discs if the film is longer than 100 minutes. The discs labeled "stereo" are exactly that, they carry 2 channels of audio. The 2 channels outputted by the dts player were wired into projector 2 input and all HF boost was removed along with any noise reduction. (Obviously there are other ways to do it, but that's how I saw most were wired in.) As I understand it, this was a temporary thing from dts because of a shortage of cdrom drives back in 1993 to handle the incredible demand for Jurassic Park. Many theaters got a 6 track player along with a stereo player for the summer of 1993 movies. One stereo disc could hold something like 500+ minutes of 2 channel audio and was processed through the normal matrix card to derive the center, surround and subwoofer exactly like optical is today. When more cdrom drives were available, dts did upgrades to convert the older decks to 6 track playback and they stopped producing "stereo" discs. Thus, any disc labeled "stereo" is completely useless nowadays except for Pete's unit. (Pete, send that in to dts and get them to upgrade it to 6 track!)
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