Speaker Design6.5" Dual cone designWater ResistanceIPx5 certified for marine useWeather ResistanceUV ray and salt water resistantRemovable GrilleFront or rear mounting, removable grille can be painted to match.RMS Power Handling65 Watts CEA2031 ratedMax Power Handling140 WattsSpecifications© 2011 Sony Electronics Inc. All rights reserved. Reproduction in whole or in part withoutwritten permission is prohibited. Sony the respective logos are trademarks of Sony. All othertrademarks are trademarks of their respective owners. Features and specifications aresubject to change without notice. /Updated: December 12, 2011AudioFrequency Response 45 - 20,000 HzImpedance 4 ohmsSensitivity (db) 90 dB/1W/1mGeneralMagnet FerriteMaterial PolypropyleneWeights and MeasurementsDepth (Approx.) 2 1/8"Diameter (Approx.) 6-1/2"Dimensions (Approx.) 6 1/2" (16 cm)Dimensions (Approx) Depth 2 1/8"Dimensions (Approx) Width 6 7/8"Weight (Approx.) 1 lbs. 7 ozSupplied AccessoriesSupplied Accessories Parts for InstallationXS-MP1611 6 1/2" Marine Speaker