Optical Out or HDMI (ARC) - which is best for me?
I have a Samsung RU7470 4K Smart UHD TV. Connected into it are an antennae cable (roof aerial), a Virgin Media V6 box (HDMI 1) and a Home Theatre PC (HDMI 2). I want to add a Soundbox (probably either the Q Acoustics M2 or Cambridge Audio TV5 v2).
I had assumed that optical out from the TV to the Soundbar would be the logical choice, but then I read that HDMI (ARC) would keep things synchronised. Both Soundboxes have a HDMI (ARC) socket and the HDMI 3 socket on the back of my TV is marked HDMI 3 (ARC), so I could use this. But ARC seems to refer to an upstream *and* downstream communication, whereas mine is only from the TV to the Soundbox.
I would like the following:
1) Turning the TV on/off will turn the Soundbox on/off.
2) Adjusting the volume using my TV remote adjusts the Soundbox volume.
3) I want the audio from the Soundbox and the Video from the TV to be in sync.
I didn't think that (3) would even be an issue, but it seems it may be.
Can anyone advise what I should use to connect the TV to the Soundbar? I'm rather confused.