The Polk Audio RM6750 Powered Subwoofer with RM6751 L/R Speakers and RM6752 Center is a 5.1 channel home theater speaker system. The rectangular-shaped speakers come in a sleek black color and are wired for connectivity. With an impedance of 8 Ohms, this compact unit is perfect for enhancing your home audio experience. The Polk RM6750 5.1 Speaker System offers high-quality sound performance and is a great addition to any home entertainment setup.