CLARION MARINE CMS-651-CWB 6.5´´ Coaxial Speakers Black and white

6.5-Inch Coaxial Marine Speakers 30w Rms Power Handling 1/2-Inch (13 Mm) Polymer Dome Tweeter Includes White & Black Classic Grilles Features: - Includes White & Black Classic Grilles - Salt & Sun Certified - 30w Rms Power Handling, Perfect For Source Unit-Powered Systems - Bridge-Mounted, 1/2-Inch (13 Mm) Balanced-Dome, Polymer Tweeter With Neodymium Magnet And Ferrofluid Cooling - Standard Cutout Size And Mounting Hole For Easy Retrofitting Specifications: - Continuous Power Handling (Rms): 30 W - Recommended Amplifier Power (Rms): 20 - 60 W / Ch. - System Efficiency: 87 Db @ 1 W / 1 M - System Nominal Impedance: 4 Ω - System Frequency Response: 55 Hz - 20 Khz ± 3 Db - Frame Outer Diameter: 6.90 In / 175 Mm - Bolt Hole Circle Diameter: 6.14 In / 156 Mm - Frontal Grille Protrusion*: 1.14 In / 29 Mm - Mounting Hole Diameter: 5.00 - 5.25 In / 127 - 133 Mm - Mounting Depth: 2.60 In / 66 Mm