The rest Series of marine speakers by Rockville is our step up Series that offers a 1 & #733; Titanium tweeter as well as more power handling! This 6x9 model can Each speaker! If you are using an external amplifier we recommend this Series & ; these speakers are completely waterproof and protected from the elements! They are UV treated and have a special waterproof coating to prevent water damage. You deserve when purchasing from Rockville! features: Rockville Rmst69 6x9 & ; 2-way 500 Watt Marine Boat speakers black CEA compliant Power ratings power rating: 500 Watts peak /125 Watts RMS per speaker system power: 1, 000 Watts combined 6x9 & ; 2-way speaker system fully marinized against salt & fresh water conditions completely waterproof and rustproof molded ABS plastic basket polypropylene MICA injected cone rubber surround high quality ferrite magnet 1 & ; inch Titanium tweeter oversized 1. 2 & ; CCAW kapton voice coil large 20 oz. magnet perfect for both marine, outdoor, and car use impedance: 4 ohms frequency response: 40Hz - 20khz sound pressure level: 91Db @ 1W/1m total diameter: 7. 8 & ; x 10. 55 & ;