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Author
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Topic: CP650 Software versions
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John Walsh
Film God
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Posts: 2490
From: Connecticut, USA, Earth, Milky Way
Registered: Oct 1999
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posted 07-21-2008 06:48 PM
OK, cool, that makes sense .. thanks!
The CP650 doesn't support 'E' anymore? Usually, manufacturers don't discontinue a feature .. they might not update it, but keep it. Not that I have ever used E, or have seen it used ... or for that matter, ever heard of anyone else using it, but I want it just *because*!
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Steve Guttag
We forgot the crackers Gromit!!!
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Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 07-21-2008 09:08 PM
Yeah, the horsepower needed for Dolby-E was reallocated to other areas. Dolby-E is a broadcast format, primarily and the fact you have not been around it shows how rare it is for cinemas.
I, on the other hand, have been dealing with it for many years. By and large, those they are going to use it have DP572s, if broadcast, or DMA8(Plus) for cinema.
I have used Dolby-E on a CP650 but it is normally a pain. The plan was that one would have to register for the feature and pay a hefty licensing fee (not cheap either). One had to pay their money and submit the MAC address to get this hideous unlock code (it is long). The CP650 would decode Dolby-E but you didn't really get much in the way of options. For Cinema, the DMA8 Plus is really the best solution...you can chose which group you want (there are 8-channels in Dolby-E but they can be cut up in many different ways). The DMA8 Plus can deal with all of the various frame rates, unlike the DP572. In fact, on the DP572, you need to provide it with a video-reference or it won't play...and at that point you have the audio only in the digital domain...you still need a D/A converter (or use the AES inputs in a CP650 or like processor).
Since the Dolby-E capability had to be there for those that wanted it...it would consume available horsepower even though 99% of the people didn't need it. It makes more sense have a DMA8 Plus. Now, if the CP650 didn't need that unlock code (different for each CP650), then having the capability for the occasional one-off show would indeed be handy.
Steve
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