12inch RMS300W/Max.600W Car Subwoofer Dual 4 Ohm impedance Products Image: Specifications: 1),12inch High performance car subwoofer 2),Black stamped baskets with perimeter vents 3),NRPP cone with rubber surround 4), Bowl type consturction wove dustcap 5),Double 40Oz stacked high diensty efficiency magnet 6), 2" Hi-temp 4-layer aluminum coil 7), Black mixture fabric spider systems applied 8), ...