A friend is considering buying this TV. He wants to use the TV as the input switcher and output audio to a soundbar. As we all know, though, TVs don't output multichannel audio via optical when the source is another HDMI device (cable, blu-ray, etc.). But does this TV output multichannel audio via ARC when the source is another HDMI device?
The plan is to connect his cable box to HDMI2 and blu-ray to HDMI3, then HDMI1 to the soundbar just for purposes of ARC (and get multichannel audio passed to the soundbar). Will that work? The reason he doesn't put the soundbar between the sources (like a receiver) and use it to switch inputs is that it's for his parents and he doesn't want the added complexity when they just want to turn on the TV. (Please, no Harmony remote suggestions.)
I read the HX750 manual online and it doesn't say whether this is possible. Thanks.