Polk Audio DB 1042 SVC DB+ Series Shallow-Mount 10" 4-ohm Subwoofer This marine subwoofer, Polk Audio DB1042 10" Single Voice Coil, serves both car and boat systems. The subwoofer 10 inch speaker features a rigid polypropylene cone and durable Santoprene surround that can handle big power over the long haul. Plus, its low-profile design allows you to enjoy serious bass without sacrificing space. Pair this DB+ sub with a compatible enclosure for powerful, wallet-friendly bass. Polk Audio tests the DB+ marine speakers rigorously for environmental effects like sun, moisture, and extreme temperature changes; as a result, they're certified for marine applications, making them a great choice for your boat. Ideal for road trips, car owners, and any car audio enthusiast who wants powerful bass, the DB+ Series delivers smooth, powerful bass. So, if you want to upgrade your sound system for car without breaking the bank, the DB+ series subwoofers are an excellent option. Polk's advanced technolo