GA1208P Type Plastic Speaker Box System type: 2 Way Molded Speaker Box with BI-AMP (OR MONO-AMP) Woofer: 12 inch woofer, 40 OZ 50.5 mm VC, 4 Ohm Tweeter: 34.4 mm TI. Diao driver, 12.4 OZ 8 Ohm Frequency Response: 45-20 KHz (-10 dB) Sensitivity: 98±3 dB/M/W Dimensions (W*D*H): 430*350*590mm Net Weight: 17.5 kg Power: 180W