If you’re looking to amp up your sound, the SWP8 Passive Subwoofer could be the answer to your audio prayers. Perfect for boats, ATVs, and other indoor/outdoor marine and spa environments, this powerful outdoor subwoofer features 100 Watt total power and an 8″ cone for the vibrations you want to feel as well as hear. A tuned port allows users to intentionally showcase their audio to sonic perfection, and multi-environment protection ensures your weatherproof subwoofer will be with you and your music for years to come.