MSX60RVR6-½" Coaxial Marine SpeakerWaterproof and designed for marine useMax power handling: 75 wattsSensitivity: 91dBFrequency: 65Hz-20kHzNominal impedance: 4 OhmsPolypropylene woofer: 6-½"Mag: 11oz.Mounting hole diameter: 5"Mounting depth: 2-1⁄3"Tweeter type: DomeTweeter material: TitaniumASTM B117 salt spray exposure standard pliantASTM D4329 UV exposure standard pliant Product : JENSEN MSX60RVR 6 1/2" HIGH PERFORMANCE COAXIAL SPEAKER Manufacturer : JENSEN AUDIO Manufacturer Part No : MSX60RVR UPC : 681787015021