Amazon.com: Massive Audio HIPPOXL64 – 6 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 6" Subwoofer 300 Watt RMS, 600w MAX Dual 4 Ohm, 2 Inch Voice Coil. Sold Individually : Electronics
Amazon.com: BLAUPUNKT 10" Single Voice Coil Subwoofer with 600W Power (GBW101) 1-PC Only, Black : Electronics
Amazon.com: MTX 3512-04S 12" 600 Watt Shallow Mount Car Subwoofer Slim Sub + Speaker : Electronics
Amazon.com: DS18 CA-X3BASS/D CAN-AM Maverick X3 12" Under Seat Loaded Subwoofer Enclosure Driver Side - 12” Shallow Subwoofer 600W RMS 1200W Max Power - Sealed Waterproof Under Seat Enclosure Design : Electronics
Amazon.com: DS18 SLG-UDSD6LD Polaris Slingshot Under Dash Enclosure with Subwoofers - 2 x 6.5 Subwoofer 600W RMS 1200W Max Power - Loaded Speaker Bass Box for Slingshots 2015+ : Electronics
Amazon.com: PYLE PLW10BL 10-Inch 600 Watt Subwoofer, Red : Electronics
Amazon.com: CT Sounds Hydro 12 Inch Car Subwoofer 600w RMS Dual 4 Ohm : Electronics