A standard surround sound home theater setup includes 5.1 channels. The “5” represents speakers positioned at Front Left (FL), Center (C), Front Right (FR), Surround Left (SL), and Surround Right (SR), while the “.1” refers to a subwoofer that delivers deep bass for explosions and other low-frequency effects. For enhanced bass distribution across a larger listening area, an additional subwoofer can be added, creating a 5.2 setup.