Type: Satellite Centre Speaker , 2 way speaker , ported, Enclosure: ABS, Driver Size : HF:0.5" polycone tweeter, LF:2x3" woofer, Amplifier Power : 40-120 Watts, Nominal Impedance: 8Ω, Sensitivity : 90dB, Frequency Response:100Hz - 20kHz, Dimensions (WxHxD):100 mm x 261 mm x 100 mm, Mounting Options: Wall mounting bracket included, Weight: 1.3Kgs per speaker, Packed in single.