Amazon.com: Pyle 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2
Amazon.com: BOSS Audio Systems CXX104DVC Car Subwoofer - 1000 Watts Maximum Power, 10 Inch, Dual 4 Ohm Voice Coil, Sold Individually : Electronics
Amazon.com: Clarion WF3030D 1000 Watts Maximum Power Handling 12" Dual 4Ohm Voice Coil Shallow-Mount Car Audio Subwoofer with (Two) Gravity Magnet Phone Holder Bundle : Electronics
Amazon.com: Rockville RWS10CA Slim 1000 Watt 10" Amplified Powered Car Subwoofer Enclosure & PAC SNI-35 Variable LOC Line Out Converter : Everything Else
Massive Audio GTX124R – 12 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 12" Subwoofer 1,000 Watt RMS, 2000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually