This Acoustic Audio 5.1 channel multi-speaker system features four, 8" in-wall/ceiling speakers, a 6.5" center channel and one maple 12" powered home audio subwoofer. These IC8 180 watt in-wall speakers mount flush in a wall or ceiling for nearly invisible installation and have paintable white grills that can be modified to match any individual decor. They contain a 8" woofer and a mica cone for performance with extended throw drive assembly, along with a 13mm soft dome tweeter. The CC6 300 watt (150W RMS) in-wall or ceiling center channel speaker contains two 6.5" woofers, a mica cone for performance with extended throw drive assembly and a 13mm soft dome tweeter. They also have a white paintable grill. The Acoustic Audio HDSUB12B black powered home subwoofer features: a high-current 800 watt amp, which drives its front-firing 12" woofer, MDF black bass-reflex enclosure and a 24Hz to 250Hz frequency response that delivers thumping bass.