Pioneer TSW311D4 12- Inch. 1400 Watt Dual Voice Coil DVC Subwoofer 12" subwoofer with Dual 4-Ohm voice coils Imp composite seamless cone 2-layer fiber-reinforced elastic polymer Surround Stamped Steel basket Max power handling: 400 watts RMS (200 watts RMS per coil) / peak power handling: 1,400 watts