Product DescriptionThe SWR-M100"s high excursion capabilities mean deep, high-output bass for great on -water performance, no matter where it is installed.Technical Specification* Sensitivity: 86 dB* RMS Power Range : 300 Watts* Peak Power Handling: 900 Watts* Impedance: 4 Ohm* Frequency response: 35-1000 Hz* Diameter: 10 InchFeatures* High Excursion for deep, high output bass* Infinite Baffle Design for widest application* Custom high-strength polypropylene frame* High AMplitude Multi-Roll (HAMR) Surround (Pat. Pend)* CRC Motor Structure (Patented)* 4-Ohm Impedance* Thermal Management System* Integrated Insert & Spade Terminals* Hidden Screw Mounting & Grille Design* Waterproof Rubber Mounting Gasket Included