Sundown Audio E-15 v4 D4 15" 500W RMS Dual 4-Ohm Subwoofer : Electronics - Amazon.com
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Amazon.com: Kicker 44CWCS104 CompC 10" 500W Single 4-Ohm Car Subwoofer Bundle with Rockville RSV10 Single Vented Subwoofer Enclosure Box and Single Sub Box Enclosure Installation Kit : Electronics
