I can't get ARC to work between my e7000 and my Onkyo 608 receiver. I d (supposedly) have an hdmi cable that supports it. I am using the HDMI 2 port.
Any ideas? It would be a pain but I could try a differnt cable I suppose.
Thanks, now I will look into the optical cable though so I can get more than 2 channel stereo out.
If the optical out is from the tv to your AVR, the best you will get is 5.1, IF, the source is the internal ATSC tuner or one of the tv's built-in apps (if you have a smart tv with apps that can do 5.1). Otherwise, most tv's do not allow 5.1 output via optical from an external source. ARC will allow 5.1 between the tv and receiver but not lossless audio (Dolby TrueHD, DTS-MA, etc), so there's a compromise.
ARC and the S/PDIF output from your TV will send the exact same audio. ARC saves a cable. That's the only difference.
Most TVs will not send encoded multichannel audio from external devices over either interface. They are limited to stereo except for audio aquired by the TV itself - from the set's internal ATSC tuner or from Smart TV apps. If you want discrete 5.1, you need to run audio directly to the receiver instead of routing it through the TV.