Select [Setup] - [Speaker Settings] from the home menu.
1
Select [Manual Speaker Settings].
2
3
Select [Level].
4
Select the speaker whose level you want to adjust from the following.
Front (L), Center 1 (*1), Center 2 (*1), Center (*2), TV Center (*3), Front (R), Front Wide (L) (*4), Front Wide (R) (*4), Surround (L), Surround (R), Surround Back (L),