GA1201 Type Plastic Speaker System type: 2 Way Molded Speaker Box Woofer: 12 inch woofer, 40 OZ 50.5 mm VC, 8 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*310*580mm Net Weight: 13.5 kg