Determine the speaker system depending on the number of speakers you are using and install each speaker and subwoofer in the room.
Speaker installation is explained using this example of a typical installation.
Place the LEFT and RIGHT speakers an equal distance from the main listening position. The distance between each speaker and your TV should also be the same.
Place the SUBWOOFER at a convenient location near the speakers. If you have two subwoofers, place them asymmetrically across the front of your room.