BOSS Audio MR60W 200 Watt (Per Pair), 6.5 Inch, Full Range, 2 Way Weatherproof Marine Speakers (Sold in Pairs) Impedance: 4 Ohms, Frequency Response: 80 Hz - 20 kHz, Sensitivity: 90 dB Installation Hole Diameter is 5.625 inches. Cone: Polypropylene, Voice Coil: 1 Inch Aluminum Surround: Treated Cloth, Basket: Plastic One 1 Inch Mylar Dome Tweeter Per Speaker Dimensions: Depth 2.6 x width 7.6 x height 3.5 inches, Weight Per Pair: 5 Lbs. Included: Grills and Magnet Covers 3 Year Platinum Online Dealer Warranty