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Everything you love about Polkâs Dynamic Balance technologyâthat rich, clean, full-range soundâis built into the marine-tough, yet ruggedly sophisticated, DB+ series. And with its universal fit, it can be installed in any vehicle: Automobiles, motorcycles, boats, ATVsâyou name it. Features: (2) Polk Audio DB692 6X9′ 450 Watt Car Audio Marine/ATV/Motorcycle/Boat SpeakersÂ Zero tweeter protrusion and reduced mounting depth for a precise fit Dynamic Balance technology offers a rich, clean, full-range sound Â¾â & Â½â, 20mm & 13mm tweeter and midrange ensures clear, balanced mids and highs 150 Watts at Continuous Power; 450 Watts at Peak Power Rockville Rockmat RM2 Sound Dampening Speaker Deadening Kit (2) 12′ x 12′ Sheets Designed and engineered by Rockville USA! Manufactured with the newest state-of-the-art machinery. We use only the purest raw materials as well! Every product is checked during production for consistency. We have very high quality standards! We use 100% high quality butyl rubber which gives amazing sound insulation and shock absorption (we do not use any asphalt in our product!) Available in both black and silver Dimensions per sheet: 12′ inch Length x 12′ inch Width x 0.07′ sheet Depth Raw Material: 90% high absorbent butyl rubber and 10% pure-grade aluminum Reduces unwanted noises 5-8 dB Adhesive temperature range of -100F to 300F (-60C to 150C). High-Tack Self-adhesive Material Color: (Silver) Weight: 1.32 Lbs. Unit Dimensions: 12.4â x 12.4â x 0.47â inch