UPDATE!!! I'm now able to adjust the level of the rear speakers by doing the following: From the remote, select the button that looks like a setting button. On my remote, it looks like a flower. It's located to the right of the sound mode button. Continue to select the setting button until you see Real Speaker Level. This will be displayed on the sound bar. Once at this level, push the wheel at the 12 O'Clock position of the wheel. To decrease, push the wheel at the 6 O'Clock position. This sets the volume for the rear speakers.
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