I was looking at page 7 of the manual where it saysWell they are powered speakers, so they need a connection to the AC adapters (as does the sub). But clearly "wireless" from a signal POV. . .
"Truly wireless" (no power cords) would be a tricky thing; now you are talking batteries (which themselves put a limit on dynamics and volume), charging docks, etc. Seems like I have seen one model where the surround speakers could dock and un-dock from the main bar, but I'm not sure if they recharged there or not; that would be a cool design there's still a tradeoff between the convenience of true wireless and having to constantly move the speakers around (vs. a one-time install with power wires).
4. OUT: Audio output jack for connecting to the left side speaker
5. IN: Audio input jack for connecting to the right side speaker
Not sure what that means, if a cable has to connect between the two?