Amazon.com: Pyle Bluetooth PA Speaker System - 300W Rechargeable Outdoor Bluetooth Speaker Portable PA System w/ 8” Subwoofer 1” Tweeter, Microphone in, MP3/USB, Radio, Remote - Pyle PPHP838B, Black : Musical Instruments
Amazon.com: 10 Inch Car Subwoofer Speaker - 300 Watt High Powered Car Audio Sound Component Speaker System w/ 1.5 Inch Kapton Bobbin Voice Coil, 8 Ohm, 25 oz Magnet, Cloth Edge Suspension - Pyramid WH10,Black
Amazon.com: Rockford Fosgate P300-8P Punch 8" 300-Watt Amplified Subwoofer in Ported Enclosure - Slim Design for Tight Spaces - Black : Electronics
Amazon.com: Pyramid 6" Car Audio Speaker Subwoofer - 300 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System w/ Molded P.P. Cone, 86 dB, 4Ohm, 40 oz Magnet,1 inch KAPTON Voice
Amazon.com: Focal RSB-300 12” Subwoofer for Sealed Enclosures : Electronics
Amazon.com: BLAUPUNKT Blue Magic XLf 200 A 300-Watt 8-Inch Low Profile Active Subwoofer System : Electronics
Amazon.com: 5 CORE 15 Inch Subwoofer Speaker 3000W Peak High Power Handling 300W RMS 15" Replacement 8 Ohm Pro Audio DJ Sub Woofer w/CCAW Voice Coil Steel Frame 90oz Magnet 15-185 MS
Amazon.com: Rockford Fosgate Punch P300-12 Single 12" 300-Watt Amplified Subwoofer in Enclosure - Black : Electronics
Amazon.com: Powered Subwoofer, Konex 12" Woofer 300W Powered Active Subwoofer, High Connectivity, Low Impedance Inputs & Line Input, Standby Mode, for Studio & Home Theater, Black : Electronics