KICKER 45L7R154 15 inch L7R DVC 4 Ohm Square Subwoofer Single 1800 Watt L7R Car Subwoofer, Solo-Baric Sub || HIGHLIGHTS The engineers at KICKER invented the original square sub to give you more bass - yet take up no more air space than a standard round sub. || Welcome to the miraculous world of the L7R! || * Dual Four-Ohm Voice Coil || * Wrap Around Gasketing || * Patented Ribbed Corners || * Injection-Molded SoloKon Woofer || || HIGHLIGHTS * SoloKon || * 360-Degree Back Bracing || * UniPlate Back Plate And Pole Piece || * Bumped Back Plate || * Thick Tinsel Leads || * Large Ceramic Magnet || * Steel Basket With Spoke Design || * Nickel Plated Speaker Terminals || || What's in the box: * Kicker 45L7R154 owner's manual || * One square 15" dual 4-ohm voice coil subwoofer || * Owner's manual (English/ Spanish/ German/ French) || || Mounting Diameter: 13.75" inches. || Minimum Sealed Box Volume: 1.5 cubic feet || Maximum Sealed Box Volume: 3.0 cubic feet. || Minimum Vented Box Volume: 3.0 cubic feet || Maximum Vented Box Volume: 6.0 cubic feet || || Kicker created their L7 square subwoofers for people who want serious, unstoppable bass, and now their latest L7R Series subs give you that powerful performance with a more friendly price tag. The 45L7R154 15" component subwoofer handles up to 900 watts RMS, enough power to fill any vehicle. Its innovative square cone moves much more air than a conventional 15" round cone, and this sub's made to take anything you can dish out.