This Acoustic Audio 7.1 channel multi-speaker system features seven, 3" black surround sound speakers and one black 8" powered audio subwoofer. Each CUBE35B full-range speaker is equipped with a 3" polypropylene woofer combined with a 1/2" Neo-dome tweeter built to handle up to 200 watts of power per speaker. They are constructed of a lightweight yet durable, ABS plastic cabinet and protected by detachable, stainless-steel mesh grills. Their size, shape and overall functionality make these speakers ideal for any monitor or surround sound application whether it be; inside the home, outdoors or on the boat. The Acoustic Audio RWSUB8 black powered subwoofer features: a high-current 300 watt amp, which drives its down-firing 8" woofer, MDF black bass-reflex enclosure and a 26Hz to 250Hz frequency response that delivers thumping bass.