The optimal location for installing a TV background in a home theater setup is directly opposite the seating area, ensuring an unobstructed view for all viewers. This placement maximizes the viewing experience by allowing everyone to see the screen clearly without straining their necks or having to crane their heads. According to a study by the National Association of Home Builders (NAHB), the ideal viewing distance from a 55-inch TV is between 8 to 10 feet, which aligns with the standard seating arrangement in most home theaters. Additionally, positioning the TV against a wall can enhance the audio experience by reflecting sound waves back into the room, creating a more immersive atmosphere.