Just read another posting here which said TV will only do surround sound when using the built in Tuner, any outside sources will only pass in stereo not dolby digital. I couldn't find any reference to that in my Sony TV manual. My Sony manual says the Digital Audio Out connects to the optical audio input of your digital audio equipment that is PCM/Dolby compatible. So is that JUST from the TV Tuner?
So I guess that will be the same for Comcast too? I should run the Comcast cable through the AV rec also?
I have a Sony PS3 BluRay player connected by HDMI to a Sony Bravia KDL-37XBR6 TV. TV is connected to a Yamaha RX-V661 AV Receiver by a Digital Optical cable. I read that the TV doesn't pass all the sound through the optical cable? Like it only sends 2 channels instead of the 5? Is that true? Would it really make a big difference to hook the PS3 first to the AV receiver and then the AV rec to the TV?
PS- I actually don't have all the speakers yet. I only have 4 connected. My 2 big original floor speakers and two extra I added as "presence L & R" speakers. So it probably doesn't matter yet. I guess my next purchase should be a subwoofer?
But my friend has a Sony Bravia TV and a BluRay player and is getting a Sony CT-100 soundbar. I had her get a Digital Optical cable too. I was planning on just connected the TV to the soundbar, but will it be a lot better to connect the BlueRay audio directly to it? If I do, it might be too complicated for her to operate it.

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