M
Mike Up
Audioholic
I was incorrect, I guess a DD 2.0 signal and DD 5.1 will both use DD + Dolby Surround. I was thinking my source material was DD 2.0 when it turned out to be PCM 2.0 instead.
I think I may have found out why the upmixers are always on. Going back through my Denon AVR-2312ci manual, when using a Dolby Digital 3.0, 4.0, 5.0 or 5.1 audio signal, to use Dolby Prologic IIx, the back surround speakers must be turned on in the setup menu. If turned off, then DD + DPLx is not available for a Dolby Digital 3.0 input signal. So to get Dolby Digital 3.0 signal decoded to higher speaker count, it required a 7.1 speaker setup.
I bet the Dolby Surround and DTS Neural:X upmixers are always available to up mix to "ANY" speaker output configuration, including up mixing a Dolby Digital 3.0 or DTS 3.0 signal to a 5.1 speaker output.
With my Denon AVR-2312ci (2011/2012 model Year), you would only get a 3.0 speaker output from a dolby digital 3.0 signal. A 5.1 speaker configuration left you at a 3.0 speaker output, where a 7.1 speaker configuration let you have a 7.1 speaker output.
I think I may have found out why the upmixers are always on. Going back through my Denon AVR-2312ci manual, when using a Dolby Digital 3.0, 4.0, 5.0 or 5.1 audio signal, to use Dolby Prologic IIx, the back surround speakers must be turned on in the setup menu. If turned off, then DD + DPLx is not available for a Dolby Digital 3.0 input signal. So to get Dolby Digital 3.0 signal decoded to higher speaker count, it required a 7.1 speaker setup.
I bet the Dolby Surround and DTS Neural:X upmixers are always available to up mix to "ANY" speaker output configuration, including up mixing a Dolby Digital 3.0 or DTS 3.0 signal to a 5.1 speaker output.
With my Denon AVR-2312ci (2011/2012 model Year), you would only get a 3.0 speaker output from a dolby digital 3.0 signal. A 5.1 speaker configuration left you at a 3.0 speaker output, where a 7.1 speaker configuration let you have a 7.1 speaker output.