(2) Skar Audio IVX-10v2 D4 10" 800W Max Power Dual 4 Subwoofer Sold as a Package - Includes 2 IVX-10v2 D4 10-Inch Dual 4 Ohm Subwoofer Peak Power : 800 Watts RMS Power : 400 Watts 2" High Temperature Copper Voice Coil Competition Grade Pressed Paper Cone and Rubber Surround