Ultramarine 7.7 Speakers - WhitePolk's Ultramarine speakers are designed to produce maximum sound in marine applications. Featuring Air Suspension technology and high-temperature voice coils, the Ultramarine family of speakers will crank up to 200 watts.These powerful 7.7 marine speakers have rugged, removable sport grilles that stand up to sunlight and moisture. Underneath, you'll find UV-treated silver polypropylene cones, durable surrounds, and cast aluminum baskets. Features:Air Suspension DesignCast Aluminum BasketHigh Temp Voice coilSnap On Grille Installation OptionTechnical Specifications:1 Titanium dome tweeterSensitivity - 90.2dBMax Power - 200W100 Watts RMSCut-out Dimensions - 6-1/4Mounting Depth - 3-1/6In the Box:Two (2) - 2 way speakersTwo (2) Trim ringsMounting hardwareInstallation manuala^-Sold in pairsWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.