Klipsch SW-112 Reference Series Powered Subwoofer, PLUS Klipsch WA-2 Wireless Subwoofer Kit Klipsch SW-112: Fills any room with high-powered bass Klipsch SW-112: Highly efficient design produces more output using less energy Klipsch SW-112: Product Dimensions: 16" H x 14.5" W x 19" D Klipsch WA-2: Allows for powerful bass extension with fewer wires Klipsch WA-2: Hassle-free setup, Plug N Play Technology