I think I read somewhere on the issues with bluray and ARC with 673.
(My configuration :
TV - VT60 connected to 673 - TV's HDMI 2 connected to 673 HDMI out. ARC On
673 - connected to blu ray, TV and 7.1 speakers
Here is what I experience --
1) First problem. When I turn on the TV, the 673 turns on... good but also turns on the blu ray sony bx510.
I will try to see if there is any option on blu ray to turn off ARC.
(I hate 673 too many issues with ARC. My Denon 1613 has no such issues.)
2) Second problem. Even after turning off the blu ray. I had to physically disconnect the HDMI cable from 673 output and reconnect. to see the OTA TV being ARCed to 673.
I definitely saw this issue being mentioned somewhere....
3) I am getting tired of ARC with this 673. If I go with optical out from TV, will it cause the sound to be inferior compared to HDMI ARC? I know that optical out can do PCM.