![]() What I’d suggest you do is first check that the “2 Speakers” Surround Back option is selected in the Speaker Configuration menu. So if your Marantz processor is defaulting to DTS Neural:X when fed a DTS-HD 7.1 Master Audio soundtrack, that indicates to me that the speaker setup and processing modes haven’t been configured properly. DTS Neural:X is similar to the Dolby Surround feature in Dolby Atmos processors in that it upmixes regular 2-channel, 5.1-channel, or 7.1-channel soundtracks to add overhead sound information when overhead speakers are detected in your system. BarteltĪ Let’s first review what DTS Neural:X is and what it does. But why would the processor create an upmixed signal instead of passing on discrete channel information to the back surrounds? I’m using an Oppo BDP-103 Blu-ray player with the audio output set to bitstream. Here’s my question: When I play a Blu-ray disc with a 7.1 DTS-HD Master Audio soundtrack, the pre-pro’s auto surround mode outputs it as DTS-HD + Neural:X (see above picture). Got a tech question for Sound & Vision? Email us at I'm a proud new owner of a Marantz AV7703 preamp/processor, which I use with a 7.0 speaker configuration (full-range fronts and no subwoofer).
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