Sundown Audio X-6.5SW V.2 6.5" 300W RMS Power 4-Ohm Car Audio SubwooferBRAND NEW SUNDOWN AUDIO X 6. 5SW V. 2 X SERIES 6. 5 inch 300 Watts RMS Power 4 Ohm Car Audio Subwoofer Key Features: Xmax: 16mm one way by 70% BL RMS Power: 300 Watts Large noise free pole vent design Specially designed spiral cut basket venting technique (unique to this model in our line) 2 diameter 4 Layer CCAW wire voice coil wound on thick Kapton former Copper Pole Cap For Reduced Inductive Distortion Integrated Tinsel Leads to prevent lead