JENSEN®MS6007WR COAXIAL MARINE SPEAKERS Designed for marine use. Weatherproof. Max power handling: 120 Watts (pair). Frequency: 65Hz-20Hz. Nominal impedance: 4 Ohms. 6-1/2" Polypropylene woofer. Magnet: 9.8 oz. 5" Mounting hole diameter. 2-3/8" Mounting depth. Tweeter type: dome. Tweeter material: titanium. ASTM B117 salt spray exposure compliant. ASTM D4329 UV exposure standard compliant. White.