The Sonodyne IWO 822 is a bass-reflex on-wall/in-wall centre speaker designed to make your home theatre experience even more dramatic and realistic with a clear and immersive dialogue. Passive radiator mounted, supported by 4″ dual, wedge shaped, low-frequency, bass, is used to provide balanced, controlled bass, and the highs are provided by a 1″ dome tweeter that is crisp and natural. Its frequency response of 70Hz19kHz, sensitivity of 87dB and the impedance of 8 ohms make it an ideal match to amplifiers of 60120W. It has a tuned 2.5kHz crossover that offers smooth and well defined sound in a slim satin black MDF enclosure with easy wall-mounting.