ROBUST SUBWOOFER FOR CAR & MARINE - Polk MM1242 DVC Marine Certified 12 subwoofer can handle 900W peak power and withstands extreme conditions; it features a titanium-plated composite woofer cone and butyl rubber surround 12 INCH SUBS HIGH-PERFORMANCE CAR AUDIO SETUP - Spring terminals are designed for heavy-duty use, capable of accepting single banana plugs, pin connectors, and bare wire up to 10 gauge; providing versatile connection options for your car sound system RESONANCE-FREE SOUND CREATION - With Dynamic Balance, a Polk Audio proprietary technology, this marine subwoofer for a marine sound system uses laser imaging to identify optimal speaker materials; ensures distortion-free response with wide dispersion SPLASH-PROOF SOUND SYSTEM - IP56 Advanced Ultra-Marine certification, this Polk boat subwoofer delivers powerful bass in tough conditions. Its waterproof surrounds, composite cone, stainless steel mounting hardware, and ABS basket resist corrosion MULTIPLE WIRING OPTIONS - The dual 4-ohm voice coils of this Polk subwoofer for car audio subwoofers, wired parallel, deliver a 2-ohm load or, wired series, an 8-ohm load, enabling flexible setups and compatibility with diverse audio systems