Boss Audio - MR6W 6.5" Dual Cone Marine Coaxial Speaker (Pair) - 180W - White - MR6W. Boss Audio's 6.5" Dual Cone 180-watt Marine Coaxial Speaker. Fully Marinized Fully Marinized is the term we use for our Marine and Outdoor products that are Weather Proof. We integrate high-tech, state-of-the-art waterproofing materials plus special UV coatings for plastic surfaces, coated circuit boards and connections to protect the product against the harsh outdoor elements and resist corrosion. Features: Speaker Type: Coaxial Configuration: Dual Cone Woofer Size: 6.5" Color: White Supplied Grill: Yes Mounting Depth: 2.1875" Mounting Diameter: 6.75" Standard Warranty: 1 Year Specifications: Peak Power Handling: 180 Watts System Impedance: 4 System Sensitivity (1W/1m): 89 dB System Frequency Response: 80 Hz to 20 kHz, +/- 1 dB WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go