Specs Speaker Type : center channel speaker Woofer : Dual 5.25-inch polypropylene Tweeter : 1-centimeter polycarbonate dome Max (RMS) : Output Power 150 Watt Frequency Response : 80 - 20000 Hz Nominal Impedance : 8 Ohm Recommended Amplifier Power : 15 Watt Sensitivity : 88 dB Crossover Frequency : 2800 Hz Magnetic Shield : Yes Dimension (WxDxH) : 20.4 x 6.5 x 7 inch Weight : 6.8 kg.