FM-S10SB FM Series 10 400W Flush Mount Marine Subwoofer - Square Grill - BlackClear audio, clean aesthetics, all-class.Engineered for high-quality audio reproduction with innovative design aesthetics, Fusions FM Series flush mount marine subwoofers are designed to deliver high-quality bass to your vessel in a sleek and minimalistic form factor to meet the latest boat design trends.Featuring an intelligent mounting system for non-intrusive, easy installation, the FM Series subwoofers are designed