A:Answer On the remote, there's a button called Quick Menu. Under that you'll find a menu item called Level. Per the user guide, this is what you can do with Level:
Level
Front: Adjust the speaker level of the front speaker while listening to the sound.
Center: Adjust the speaker level of the center speaker while listening to the
sound.
Subwoofer: Adjust the speaker level of the subwoofer while listening to the
sound.
• If you set the unit to the standby mode, the adjustments you made will be
restored to the previous statuses.