Quantum QAW12D2 Alpha Series 12-Inch 2 Ohm DVC Subwoofer 2.5-Inch 4 Layer DVC with Aluminum Former VAC PP Cone with Single Stitch Rubber Surround VAC Aluminum Dome Stamped Steel Frame EVA Gasket 12 inch 2 Ohms die cast subwoofer, 2.5 inch 4 layer DVC with aluminum former Vac PP Cone with single stitch rubber surround 102 oz Y30 magnet Black Electro-plated finish top, bottom and yoke Max power 2500 watts, Rms power 625 watts