Alpine R2-W8D4 8” R-Series 350W RMS Subwoofer Car Sub R2W8D4+Bluetooth Speaker | eBay
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BOSS Audio Systems BAB10 10 Inch Powered Under Seat Car Audio Subwoofer - 1200 Watts Max, Low Profile, Remote Subwoofer Control, For Truck, Boxes and Enclosures - Walmart.com