PYLE PLMR66W 5-Inch PP Cone and PU Edge 500 Watts Marine Speakers (White) Flush-mounted design for boat pre-cut opening - Frequency Response: 70--15K HZ (+-3dB). 5" Woofer PP Cone - Sensiivity:88dB@1W/M. High Impact ABS Ported Enclosure - 4 Ohms Impedance. 1" Aluminum Voice Coil. - Unit Dimensions: 7.75"W x 12"H x 4.5"D 500 Watts Max Power.