Lanzar OPTI1028 Opti-Drive Pro Series 10-Inch 2000 Watt Coaxial Full Range 8 Ohm Subwoofer Speaker
Amazon.com: Lanzar 15in Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Stamped Plastic Basket, Dual 4 Ohm Impedance, 2000 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System -