AVS Forum Addicted Member
Join Date: Nov 2006
Location: Colorado Springs, CO
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I am not 100% sure what you want to do. Making some assumptions, let's say you are using your TV as a tuner, and want DD out. You may be able to do that using the TVs audio out. That's one reason to worry about the TVs optical output I can think of.
In general, I would run all audio through your AVR, and skip the TVs audio as much as possible.
Most TVs have limitations on audio that AVRs don't have. I would not expect get Dolby Digital out from a TVs optical out when fed HDMI audio, but you really have to check your TVs manual and experiment. If you hook up your AVR in the usual way, that should not matter much.
Some people want their TV's to have all the same audio their receivers do - for wives, children, whatever, who want to be able to turn on the TV and have it work. That may be what you are getting at. There's some challenges to that though. For example, trying to use your TV to switch and route the proper HDMI audio back to your AVR. Odds are good you won't be able to do that without making some compromises.
"But this one goes up to 11"