Polk Audio MM842 SVC 8-Inch Marine & Car Subwoofer – 900W Peak, 30–200Hz, 4-Ohm

All-Terrain Audio for Cars and Boats

Meet the Polk MM842 SVC 8-inch Marine Certified Subwoofer, designed for car and boat environments where space is tight and conditions can be tough. With 900W peak power, a 4-Ohm voice coil, and a polypropylene cone, it delivers punchy, controlled bass across a 30–200 Hz range.

Core build notes include a titanium-plated composite cone and a durable butyl rubber surround. The rugged ABS basket and stainless steel mounting hardware resist corrosion, while IP56 Ultra-Marine certification signals readiness for marine use with protection against salt spray and humidity.

Engineered for crisp, wide listening in motion

Polk's Dynamic Balance technology aims to minimize distortion while preserving wide dispersion. Laser imaging guides the material blend and geometry to optimize response, helping the subwoofer perform with clarity as you move from seat to seat.

• Flexible connections via heavy duty spring terminals that accept banana plugs, pin connectors, or 10 gauge bare wire
• 8-inch woofer with 900W peak power supports strong, responsive bass in compact spaces
• Waterproof surrounds, a stainless steel mounting frame, and an ABS basket protect against corrosion
• Designed for both casual listening and energetic tracks, with a wide, distortion-free response

Real world versatility

Whether you are upgrading a car audio setup for road trips or equipping a boat with a dependable sound system, the MM842 offers a robust, space-efficient solution. The single 4-Ohm voice coil helps integration with a variety of amplifiers, while the polypropylene cone balances stiffness and weight for steady bass performance during dynamic playback.

In short, the MM842 combines Polk engineering with tough materials to create a subwoofer that unlocks powerful bass in demanding environments without taking up excessive space.