The Bose Acoustimass 10 Series IV home entertainment speaker system brings 5.1-channel sound to your movies and music. Connect it to your home theater receiver and enjoy Bose quality sound. This system includes an Acoustimass Bass Module, Four Direct/Reflecting Cube Speakers, a Center Channel Speaker, and the cables to connect all. Just plug and play. The Acoustimass 10 Series IV speaker system is engineered to fill the room with beautiful sound, not bulky speakers. You can hide the Acoustimass module virtually anywhere in the room, and you experience dramatic sound that all seems to come from the small speaker arrays. Two downward-firing drivers in the Acoustimass module give you powerful performance for the lowest audible notes and effects. The module features technology that minimizes audible distortion. The horizontal center-channel speaker complements flat-panel TVs and blends nicely into your decor. 5.1-channel home entertainment speaker system for large rooms Powered Acoustimass module adds drama to music and movies Direct/Reflecting cube speaker arrays blend reflected and direct sound to produce stereo sound almost anywhere Horizontal center-channel speaker array visually complements flat-panel TV screens Cube Speakers: 6.25 x 3 x 4 inches (HxWxD); 2.4 pounds Center Channel Speaker: 3.13 x 6.25 x 4.13 inches (HxWxD); 2.36 pounds Acoustimass Module: 16.33 x 8.13 x 25.33 inches (HxWxD); 35 pounds Compatible with A/V receivers and amplifiers rated from 10 to 200 watts per channel, rated from 4 to 8 ohms