Amazon.com: JBL BassPro SL2 Active Underseat Car Subwoofer with Built in Amplifier - Under Seat 8'' Subwoofer Car with 125 Watt Power Amplifier : Electronics
Rockville W15K9D2 15" 5000w Peak Car Audio Subwoofer Dual 2-Ohm Sub 1250w RMS CEA Rated - Walmart.com
CX-18IPA | 18'' | 5000W MAX | 2Ω
Amazon.com: Pyramid 10 Inch Car Subwoofer Speaker - 500 Watt High Powered Car Audio Sound Component Speaker System w/ 2 Inch High-Temperature Kapton Voice Coil, 85.6 dB, 8 Ohm, 60 oz Magnet - Pyramid PW1048USX : Electronics