Multipolarity It offers 2-way bass-reflex on-wall/in-wall performance with the use of this modern home theater and media environment. Passive radiator 6″ glass-fibre dual woofers provide deep, controlled bass and the 1 inch dome tweeter provides clear highs with detail. Having 43Hz to 22kHz frequency response, 89dB sensitivity and 8 ohm (impedance) it is compatible with amplifiers rated 150 to 300W. It is tuned with a 1.6kHz crossover and provides a balanced and immersive sound in a smooth satin black MDF enclosure that can be mounted on the wall in a flexible way.