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In Reply to: Denon AVR 3801 Receiver Help posted by snpower on July 25, 2006 at 17:26:46:
Both Dolby and DTS have six channel (6.1 that is) versions and these are identified as "ES" or "EX". Many receivers and pre/pros superimpose a matrixed sixth channal when fed a 5.1 signal. The difference between 6.1 and 7.1 is that in 6.1 there is a rear center channel whereas in 7.1 there are two extra channels on the rear sides. I have A/B'd a 5.1 signal with a 6.1 signal and there is a difference, the 6.1 sounding more ambient and "fuller".
Follow Ups:
Isn't 7.1 exactly the same as 6.1 but with two channels? In other words, the two rear channels are mono? If so, is there really a difference between a 6.1 or 7.1 pre/pro (not so much a receiver as you'd have to use one amp section for two speakers)? One could just run a splitter off the mono channel on a 6.1 and get the same result, no? You may have to run it a tad higher to make up for possible voltage loss, but I can't imagine this would be worth worrying about.
I looked on the Dolby website and it seems to suggest that a 6.1 setup would have a matrixed rear center channel but that a 7.1 would have dicreet right side and left side channels. Maybe someone more in the know than I am can answer your question definitively.
That makes sense. Thanks.
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