JBL Power P1220D 12" Dual 2-ohm Component Subwoofer at Crutchfield
BOSS Audio Systems AR120DVC Armor Series 12 Inch Car Audio Subwoofer - 1600 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck, Boxes and Enclosures, Use With Amplifier - Walmart.com
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
JBL PRX418S 1600W 18 inch Passive Subwoofer | Sweetwater
Harmony HA-P18LS16 Replacement 18 Pro PA 1600W Subwoofer/Speaker 16 Ohm Woofer : Musical Instruments - Amazon.com
Lanzar 12in Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Stamped Steel Basket, Dual 4 Ohm Impedance, 1600 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP124D
JBL SRX835 Passive Loudspeaker | zZounds
12' Car Audio Speaker Subwoofer - 1600 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 40 Ohm, 60 oz Magnet, 2 Inch 4 Layer Voice Coil - Pyle PLPW12D