The trapezoidal design allows for the enclosures to be mounted neatly into corners, making them ideal for Hi-Fi and surround sound applications. Impedance : - 8 ohms Colour : - Black Woofer : - 200mmDia (8") Tweeter : - 25mmDia (1") siilk dome tweeter Frequency response : - 50Hz - 20kHz Power rms : - 90W Power max : - 180W Sensitivity : - 89dB Dimensions (each) : - 280 x 374 x 257mm Weight : - 5.26kg Weight per set : - 10.5kg. Features a polypropylene woofer 2-way speakers Complete with mounting brackets Supplied in pairs Note: Connecting leads not supplied Optional mounting by M6 screw sockets.