Kicker 44L7S84 - 8" Solo-Baric L7S 4 Ohm - L7S 8-Inch (20cm) Subwoofer, DVC, 4-Ohm, 450W. The KICKER® Solo-Baric® L7S™ features cutting-edge technology for truly musical, distortion-free bass. Square Matters The Solo-Baric's cutting-edge, square-sub design means more cone area, more air displacement and more volume than a round woofer. Features Dual Four-Ohm Voice Coils Injection-Molded Polypropylene Cone Patented Corner Ribs Minimize Distortion SoloKon™ 360-Degree Back Bracing Ribbed Santoprene Surround With Blue Surround Stitching UniPlate™ Back Plate And Pole Piece, Plus Perimeter Venting For Excellent Thermal Management Thick Tinsel Leads Large Ceramic Magnet Cast Aluminum Basket Satin-Nickel Plated, Spring-Loaded Speaker Terminals *The Solo-Baric L7S 8-Inch Subwoofer works best with a sealed or ported enclosure and 450 watts of recommended power. See Recommended Amp RMS Power for more details. Amp RMS Power Specifications Size (IN.,CM) 8, 20.32 Impedance (OHMS) 4 DVC Max Rec Amplifier Power (WATTS PEAK/RMS)* 900/450 Sensitivity (dB 1w/1m) 83.6 Frequency Response (Hz) 28-100 Mounting Depth (IN.,CM) 4-3/4, 12.1 Mounting Cutout, Square (IN.,CM) 7-1/4, 18.4 Min Rec Sealed Box Volume (CU. FT., Liters) .5, 14.16 Max Rec Sealed Box Volume (CU. FT., Liters) .75, 21.24 Min Rec Vented Box Volume (CU. Ft., Liters)** .66, 18.6 Max Rec Vented Box Volume (CU. Ft., Liters)** 1.0, 28.3 What's in the box? one 8-inch subwoofer, one owner's manual, two stickers *Assumes typical music program with minimal amplifier clipping; varies with enclosure size. See your KICKER dealer for details. **Port Volume Excluded.