Amazon.com: MB Quart DS1-204 Discus Shallow Mount Subwoofer (Black) – 8 Inch Subwoofer, 400 Watt, Car Audio, 2 Inch Voice Coils, UV Rubber Surround, Best in Sealed Enclosures : Electronics
Amazon.com: Orion Subwoofer Competition RMS Power Dual Voice Coil 4" high Temp Voice Coil - Single Speaker Car Stereo Bass Woofer (HCCA102, 10 Inch - Dual 2 Ohm) : Electronics
Amazon.com: CERWIN Vega Under Seat Enclosed Powered Plug and Play Subwoofers Series (VRAD10) : Electronics
Amazon.com: Rockville RW8CA 8" 600 Watt Low Profile Under-Seat Active Powered Car Subwoofer, Black : Electronics
Amazon.com: Monoprice 60-Watt Powered Subwoofer - 8 Inch With Auto-On Function, For Studio And Home Theater Black : Everything Else
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
Amazon.com: CERWIN Vega Under Seat Enclosed Powered Plug and Play Subwoofers Series (VPAS12) : Electronics
Amazon.com: Pyle PLPW10D 10" 2000W Car Subwoofer Audio Power Subs Woofers DVC 2 Pack with Black Steel Basket, Non Press Paper Cone and 4 Ohm Impedance : Electronics
Amazon.com: Rockville PA System w/ 15" Speakers+15" Subwoofers+12" Monitors+Stands and Cables : Musical Instruments
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
Amazon.com: Sound Storm Laboratories LOPRO10 10 Inch Powered Under Seat Car Audio Subwoofer - 1200 Watts Max, Built-in Amplifier, Low Profile, Remote Subwoofer Control, for Truck, Boxes and Enclosures : Electronics
Amazon.com: JBL SUBBP12AM - 12” amplified 12” Subwoofer with Sub Level Control, Black : Electronics
Amazon.com: AudioPipe TXX-BDC4-15D 15 Inch 2,800 Watt High Performance Powerful Dual 2 Ohm DVC Vehicle Car Audio Subwoofer Speaker System, Black : Electronics