(2) Rockville W15K6-D4 CEA Compliant 15 2000 Watt Car Subwoofers DVC 4-Ohm Subs Rockville W15K6-D4 15" 1000 Watt Dual 2-Ohm Car Subwoofer Power Handling: 1000 Watts Peak/500 Watts RMS (CEA Rating) Kevlar Fiber Reinforced Ultra Stiff Paper Composite Cone 3D Injected Poly Dust Cap Expanded and Rolled Steel Basket