Amazon.com: Pyle 12' Car Audio Speaker Subwoofer - 1600 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 40 Ohm, 60 oz Magnet, 2
Amazon.com: Gravity G5 12 Inch 3000 Watt Package Car Audio Subwoofer w/ 4 Ohm DVC Power (Single) : Electronics