Originally Posted by eric-t
Why does Fox Sports Detroit+ channel show it's broadcasting in Dolby Digital 3/2 and the regular Fox Sports Detroit channel shows 2.0? And the kicker is I only get sound out of my Left and right speakers and nothing out of my center or rear speakers on the Plus channel.
This is because Fox Sports Network Detroit HD channel has their Dolby Digital audio encoder settings wrong.
What they are doing is setting the DD audio encoder for a full 5.1 channel output, but only have the main two left and right channels of audio going into it.
The result is that your DD audio decoder thinks it's getting 5.1 channels. When that happens, the result, as you have found, is that you only get audio on the main left & right channels.
The worst part of the problem is that you can't override what the DD decoder thinks it's getting, and thus you can't use a matrix surround mode like Dolby Pro Logic for analog surround sound, from the incorrectly encoded DD input.
My often given advice is to also have analog stereo left and right channel audio cables connected from the source box, in this case your DirecTV HD receiver, to your DD audio processor. That way when your watching these channels you can switch to the analog audio inputs and at least get matrix analog surround sound.
To the best of my knowledge, the reason for this mistake is due to how the FSN national broadcast center in Houston, TX processes audio. I strongly believe they have some kind of technical limitation that prevents them from using the correct settings.
If you check the Big Ten HD channel, it should be the same, because Fox is responsible for the technical side of that channel, too.
On Comcast systems, both the main FSN Detroit HD channel and the FSN Detroit HD Plus channel, and Big Ten Network HD channel, all have the same incorrect settings.
I'm not sure why DirecTV is different in how the main FSN Detroit channel and the Plus channel are for DD audio, but that may be a DirecTV specific problem.
I've looked into this before, but never got very far with getting an answer. I will try again.