Manufacturer's Description
Philips Cinema Center Speaker" brings: Wider sweet spot through no less than 5 drivers positioned at different angles; More depth in sound through clearly distinguishing front from background, and action from dialogue, and; Natural and crystal clear sound reproduction through the revolutionary new 2" full range woofers
Class D Amplifiers have up to 95% efficiency, Class D Digital Amplifiers mark a huge advance over traditional AB type amplifiers, resulting in high-powered pure and digital sound quality