Speaker specification:1. Driver Unit:Subwoofer: Æ 40 mm 32 W, 500 mW x 2 pcs.Front/Rear: Æ 30 mm 32 W, 50 mW x 4 pcs.Center: Æ 30 mm 64 W, 50 mW x 2 pcs.2. Frequency Response:Subwoofer: 20Hz~1KHzFront/Rear: 20Hz~20KHzCenter: 20Hz~20KHzMicrophone specification:Impedance: 2.2 kWFrequency: 100~10 kHzSensitivity: -54 ±3 dB