JBL BASSPRO HUB 11" Car Spare Tyre Subwoofer Sub with Built-In Amplifier 200W | eBay
BOSS Audio Systems CUBE8 8 Inch Car Audio Subwoofer and Amplifier Package – Powered, Built-in Amplifier, Passive Radiator, Remote Subwoofer Control, For Truck, Boxes and Enclosures - Walmart.com
JBL BassPro SL 2 Compact powered subwoofer: 125 watts and an 8" sub at Crutchfield
JBL BASS pro 12 450 with amp Works Perfect for Sale in Modesto, CA - OfferUp
Car Dual 10" Subwoofer with Built-in 300 WATT Amplifier TBX10A No Wire Plug 827204211762 | eBay