Amazon.com: DS18 SLC12S Car Subwoofer Audio Speaker - 12" in. Paper Glass Fiber Cone, Black Steel Basket, Single Voice Coil 4 Ohm Impedance, 500W MAX Power and Foam Surround for Vehicle Stereo
Edge EDB12A-E0 - 12" Active Enclosure Car Subwoofer 900W Max Power Bass Package | eBay
Edge EDB12A-E2 900W 12" Subwoofer and Amplifier Active System. Tested in full working order.
EDGE 12" Subwoofer EDB12A - YouTube
NEW Edge 12" 900w Peak BASS Car Audio Sub Speaker Active Subwoofer Enclosure 5060037505515 | eBay
STLF-1504-4 | 15" 450W Raw Replacement Woofer w/ 4" Voice Coil for Subwoofers – Sound Town
1800 Watts 12 inch Twin Active Bass Enclosure | EDGE EDB12TA-E2 – Edge Car Audio