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post #1 of 3 Old 01-09-2020, 04:16 PM - Thread Starter
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New TV + Old AV Receiver

Hi all.

First post here. Looking for some advice on audio setup.

I have an old Yamaha RX-V12000RDS AV Receiver that can handle Dolby Digital and DTS. It has Optical + Coax inputs, no HDMI. I plan to use it to set up a 5.1 system.

I recently bought a new TV (LG 55UM7450PLA). Still in the box waiting for the room to be redone. The TV has HDMI/ARC and optical out and will output DD over both of these. So it seems I can at least get Dolby Digital 5.1 from the TV to the receiver.

Just wondering if there are other possibilities for improving the sound. The TV will output DD+ over HDMI/ARC. The receiver has 6 channel input.

I can set the TV to output PCM. So wondering if this will allow me to get DD+ sound quality. I guess I would need a HDMI extractor to convert the PCM into 6 channels and then connect to the receiver.

Alternatively if I set the TV to output DD+ over HDMI ARC could I use an external decoder to convert this to 6 channel PCM. I have been looking for a decoder that can do this but I haven't found anything that clearly does this. Most of the inexpensive HDMI extractors I've seen seem to only offer passthrough.

Thanks

Attached is a summary of the audio out possibilities.
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post #2 of 3 Old 01-12-2020, 03:27 AM
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Quote:
Originally Posted by Neutron_Star View Post
Just wondering if there are other possibilities for improving the sound. The TV will output DD+ over HDMI/ARC. The receiver has 6 channel input.

I can set the TV to output PCM. So wondering if this will allow me to get DD+ sound quality.
DD+ does not necessarily sound better than DD, it just uses a lower bitrate (and optionally, Atmos encoding which is not at issue here). Also, the way DD+ devices "transcode" DD+ signals to the legacy DD output preserves the quality of the DD+. You might be surprised.

If you set the TV to output PCM it will be limited to stereo rather than 5.1, in case that matters.
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post #3 of 3 Old 01-12-2020, 02:22 PM - Thread Starter
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Quote:
Originally Posted by Roger Dressler View Post
DD+ does not necessarily sound better than DD, it just uses a lower bitrate (and optionally, Atmos encoding which is not at issue here). Also, the way DD+ devices "transcode" DD+ signals to the legacy DD output preserves the quality of the DD+. You might be surprised.

If you set the TV to output PCM it will be limited to stereo rather than 5.1, in case that matters.
Thanks Roger.

I did some searching and found a few threads on here which basically say the same as what you have said. I'm looking forward to setting this system up in our newly refurbed room.
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