Soundstream R3.10 700 Watt RMS 10" Dual 2 Ohm Subwoofer Car Stereo Sub Woofer 709483046320 | eBay
Amazon.com: Soundstream USB-10P 10 Inch Underseat Enclosed Car Vehicle Subwoofer with Built In 150 Watt RMS Amplifier and Bass Knob Remote Control, Black : Electronics