Rockville W15K9D4 15" 5000w Peak Car Audio Subwoofer Dual 4-Ohm Sub 1250w RMS CEA Rated

Video of W15K9D4: Features: Rockville W15K9D4 K9 Series 15" Dual 4-Ohm Car SubwooferPeak Power Handling: 5000 WattsProgram Power Handling: 2500 Watts  CEA Rated RMS Power Handling: 1250 Watts 3" 4-Layer Black Aluminum Voice Coils Wound with OFC Wire Made in USAThe OFC Wire we use is made in USA. This voice coil we use can hold 240℃,andthis voice coil is the best one that in the same power handle level. This voicecoil can let the subwoofer high quality and work so long time. The temperatureresistance is very strong.Double Stacked 190 Oz High Quality MagnetCast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient AndLighter WeightTwo Chrome-Plated Binding Post Terminals (These are the best terminals on themarket and they accept any gauge wire and easy to connect, won't be oxidation)Black Non-Pressed Paper Cone With Beautiful Finish Our cones are ultra-stiff. They are thicker and stronger than other subs on themarket making our subs able to handle more power.Thick Foam Surround Provides Incredible Sound Quality With Minimal DistortionRed Stitching Cone Reinforcement Ensures Long LifeNew Ultra-stiff PolyPropylene (PP) DustcapImpedance: Dual 4-Ohm Voice CoilsVented Hole on T-yoke Enhances Heat DissipationSpecial Custom Rubber Boot Magnet Covers Make the Woofer Look Nice and Protectsthe MagnetCustom Rockville Mounting Gasket Looks Beautiful and Makes it Easy To Mount theSubwoofer Air-TightHigh BL Magnetic Motor GapWe use the highest grade black glue that handles extremely high temperatureswhich allows our woofer to handle even more power than they are rated Nomex Spider provides tear resistance, strength and long-term reliability overregular cotton and poly cotton spidersCutout Diameter: 14.09” inchesMounting Depth: 8.23” inchesFrequency Response: 32 Hz - 1.5K kHz10mm T-Yoke + 10mm WasherSensitivity: 87.9dBSealed Enclosure Volume: 1.75 -2.9 Cubic Feet Vented/Ported Enclosure Volume: 2.5 - 3.85 Cubic FeetWeight: 34.17 Lbs.Shipping Weight: 38.58 Lbs.Shipping Box Dimensions: 17.72" x 17.72" x 12.4" InchesTS Parameters:Fms: 32.0 HzRes: 76.2 OhmRe: 7.6 OhmQms: 5.27Qes: 0.72Qts: 0.63Rms: 10.3kg/sCms: 0.09mm/NMms: 270.9 grNref: 0.39%Bl: 24.1N/ASPL: 87.9dBVAS: 87.9 LRp: 51.5 OhmLP: 53.8mHCP: 560.5uFLe: 3.32mHDetailed Info:Body: Non-Pressed PaperGap Plate Inside Diameter: 95mm (3.74 inches) Gap Plate Outside Diameter: 190mm (7.5 inches)Gap Plate Thickness: 25mm (1 inch)Yoke Outside Diameter: 180mm (7.1 inches) Yoke Thickness: 10mm (0.4 inches)Yoke Pole Diameter: 75mm (3 inches)