Questions on HDMI ARC
In moving around some old but excellent Panasonic TVs, including a plasma, I found that the headphone jack of the high end plasma from 2011 does not cut out TV speakers when active speakers are wired to it. A later 2018 budget Panasonic TV did just that and I was able to use just the Firestick remote to control sound levels from the external speakers with the TV speakers bypassed, therefore silent. By using the headphone jack on that budget TV. A lot of googling teaches that this 2011 behaviour is normal for Panasonic and not to be defeated.
Now, on the 2011 plasma, I have to dial down the TV speakers to zero and bump up the volume on the active speakers via their controls. Clunky, but two remotes now needed because the addition of the TV speakers degrades the overall sound quality.
On the other hand, the plasma of 2011, has 4 HDMI inputs, of which one - HDMI 2 - is said to be HDMI ARC. Not “e Arc”, just ARC.
Questions now: if I wire a Atmos capable Firestick to HDMI 1, and a atmos capable sound bar to HDMI 2 on the TV, the HDMI ARC one, via the correct cables, will I get the bar to play atmos effects from streamed content that has it?
Will there be lip sync - regardless of what make the bar is?
Will the Firestick remote control bar sound levels?
Will the TV speakers be bypassed?