ULTRA-POWERFUL SUBWOOFER FOR CAR & MARINE - The Polk DB1042 DVC 10" Marine Certified Subwoofer is a space-saving sub with 1050W peak power and features a polypropylene woofer cone & a durable Santoprene surround built to handle big power over the long run HARD-HITTING BASS FOR YOUR CAR AUDIO - With Dynamic Balance Technology, a Polk Audio proprietary, this marine subwoofer uses laser imaging to identify the best combination of speaker materials, ensuring distortion-free response with wide sound dispersion SPLASH-PROOF SOUND SYSTEM - Polk DB+ series speakers give thunderous sonic output in freshwater boats, motorcycles, ATVs, and others, as they have IP56 marine certification with coated steel baskets. They are even tested for Salt-fog, UV & Humidity WALLET-FRIENDLY POLK AUDIO SUBWOOFER - Experience powerful and smooth bass like never before with this compact subwoofer. Designed with cutting-edge technology and premium materials, this affordable sub is the ultimate choice for an audio system MULTIPLE WIRING OPTIONS - The dual 4-ohm voice coils of this Polk subwoofer when wired in parallel results in a 2-ohm load, while in series presents an 8-ohm load. This allows for customized configurations and compatibility with a variety of audio systems