JENSEN - MS6007BR 6.5" Coaxial Waterproof Speaker - Black - MS6007BR. Key Features:. Max power handling: 120W/Pair. Sensitivity: 91dB. Frequency response: 75Hz - 20kHz. Nominal impedance: 4 Ohms. Polypropylene woofer: 6-1/2". Magnet: 9.8oz. Mounting hole diamater: 5". Mounting depth: 2-1/3". Tweeter type: Dome. Tweeter material: Titanium. One-piece plastic chassis with integrated drip-edge. Voice coil size: 1". Suspension/surround: Rubber. 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 to P65Warnings.ca.gov.