Does anyone know why I am only getting PCM 2.0 audio input from my SPDIF signal into BS3?
My current setup is ATV HDMI -> LG C9 optical -> BS3. I only get PCM2.0.
I have tried PS4 optical -> BS3. I only get PCM 2.0. (This rule out the problem lies with LG tv output)
If I connect ATV HDMI -> BS3. I get PCM 7.1 input no problem.
So the question is:
1) SPDIF can only output 2.0 signal? (which I don't think so)
2) BS3 cannot receive multichannel signal from SPDIF? (I think this is the answer, but would like to confirm)
3) My cables doesn't transmit multichannel signal properly? ( toslink optical cable -> converter -> SPDIF coaxial)
I cannot use HDMI as audio input since LG doesn't support HDMI audio out, only HDMI ARC.
Thank you for your input.