That’s what surround speakers are supposed to do. Provide “surround” sound, ambient noises, ships passing behind the “camera”, etc. It’s not supposed to have the same voices as are on the center channel of the Beam.
In your “About My System” area, underneath the Beam, there should be a line that starts with “Line In”, usually the second from the bottom of the Beam’s listing. The information after that phrase is the kind of signal the Beam is receiving.
Here’s the listing on my PLAYBAR:
Playbar: LR TV
Serial Number: XX-XX-XX-XX-XX-XX:X
Version: 10.5.1 (build 53371050)
Hardware Version: 1.9.1.10-1
Series ID: A100
IP Address: XX.X.X.61
Audio In: Dolby Digital 5.1
WM: 0
OTP:
So, on the third line from the bottom is the Audio In line, which indicates that when I ran the “About My System” report, the PLAYBAR is receiving a Dolby Digital signal.
I happen to be watching a Formula One race, where ESPN in the states is carrying the SkySports signal. It’s on a Dolby Digital carrier, hence why it reflects Dolby Digital, but the actual broadcast is in stereo, so the data channel to my rears is nothing. (I think….it’s hard to tell sometimes.). If I were watching a movie, then the rear channel would likely be much more lively. One of my early demonstration pieces was the beginning of Saving Private Ryan, where you can hear the bullets entering the water from the rear speakers quite clearly. But not the voices.