JBL's MS6510 speaker is designed with a polypropylene cone that provides more overall speaker-cone area for higher sensitivity, increased low-frequency output, and greater musical character. Weather-resistant tweeter delivers a smooth high-frequency response and increased power handling. One-piece polymer basket is designed to stand the test of time, even after long exposure to salt and sun. 300-watt peak power. 4 ohm impedance. Includes speaker wire, stainless steel mounting hardware, and owner's manual.