PRO-CF8.2NR 8 Mid-Bass Water Resistant Loudspeaker DS18 has an amazing line of loudspeakers that are not only water proof, they are centered around a Neodymium magnet, with super strong rubber surround, and high tech carbon fiber cones that gives not only great looks, but very high sensitivity levels for an amazing water resistant speaker that you can play loud and clear out in the elements. SPECIFICATIONS Nominal Diameter 8 / 203mm Nominal Impedance 4 ohms RMS Power Handling 300W MAX Power Handling 600W Sensitivity (1w/1m) 99dB Frequency Response 63Hz-12KHz Recommended HI Pass Crossover80Hz Pair or Single Single Grill Included No MOTOR Voice Coil Diameter 2 / 50mm Voice Coil Former Material Kapton Winding Material CCAW Cone Material WP Carbon Fiber Dust Cap Material WP Carbon Fiber Surround Material Rubber Basket Material Steel Basket Color/Finish Gloss Black Magnet Material Neodymium Rings Magnet Weight0.3Kg MEASUREMENT Overall Diameter 8.29 / 210.7mm Overall Depth 3.38 / 86mm Front Mount Baffle Cutout 7.16 / 182mm Mounting Depth 3.2 / 81.5mm Motor Diameter 4.45 / 113mmNeodymium is known for being the best option for magnets in your speaker motors which give the loudest and most efficient speaker. Amazing looks with the carbon fiber cone that comes held by a super strong rubber surround that will last all your tests!. This super loudspeaker can be used for many applications, It can be used in motorcycles, cars, motorsports, home, and marine applications alike!. DS18 has an amazing line of loudspeakers that are not only water proof, they are centered around a Neodymium magnet, with super strong rubber surround, and high tech carbon fiber cones that gives not only great looks, but very high sensitivity levels for an amazing water resistant speaker that you can play loud and clear out in the elements. The PRO-CF8.2NR Car Audio Speaker handles great power; rated at 300 watts RMS and 600 watts max, you know this powerhouse of a speaker can get loud and clear!.