Rockville W8K5S4 4-Pack + Quad 8 Ford Crew Cab Enclosure Bundle

Package Includes: (4) Rockville K5 W8K5S4 8" 800w 4 Ohm Car Audio Subwoofer Sub 200w RMS CEA Rated! (1) Rockville Quad 8" Sub Box For 2009-2020 FORD F150 SUPER CREW+2017-2020 F250/350 (2) Dual Sub Box Enclosure Installation Kit: Speaker Wire, Screws, Spade Terminals Video of K5 SERIES: Features: Rockville W8K5S4 K5 Series 8" 4-Ohm Car Subwoofer Peak Power Handling: 800 Watts Program Power Handling: 400 Watts CEA Rated RMS Power Handling: 200 Watts 1.5" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire The wire we use to wind the voice coil is imported from Japan which is way better quality than the standard China wire 30 Oz High Quality Magnet Cast Iron Basket With Black Sanded Finish Fiber Reinforced Ultra Stiff Black Non-Pressed Paper Cone – This cone is very efficient which makes the speaker sound louder even without requiring a lot of power to push it Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion Blue Stitching Cone Reinforcement Ensures Long Life Paper Dust cap is light weight and efficient helping the sub to play louder even if your amp is not so powerful Chrome-Plated Binding Post Terminals - These are the best terminals on the market and they accept any gauge wire Impedance: Single 4-Ohm Voice Coils Vented Hole on T-yoke Enhances Heat Dissipation Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet Mounting Gasket with Rockville branding looks great and Makes it Easy To Mount the Subwoofer Air-Tight High BL Magnetic Motor Gap We use the highest grade black glue that handles extremely high temperatures which allows our woofer to handle even more power than they are rated Cutout Diameter: 7.16 inches Mounting Depth: 3.54 inches Frequency Response: 37 Hz - 1.3K kHz 5mm T-Yoke + 5mm Washer Sensitivity: 85.7dB Sealed Enclosure Volume: 0.35 – 0.85 Cubic Feet Vented/Ported Enclosure Volume: 0.6 – 1.2 Cubic Feet Weight: 5.2 Lbs. Shipping Weight: 6.5 Lbs. Shipping Box Dimensions: 10.25x 10.25 x 8.1 Inches Detailed Info: Body: Non-Pressed Paper Gap Plate Inside Diameter: 60mm (2.36 inches) Gap Plate Outside Diameter: 120mm (4.72 inches) Gap Plate Thickness: 25mm (0.98 inches) Yoke Outside Diameter: 114mm (4.48 inches) Yoke Thickness: 5mm (0.20 inches) Yoke Pole Diameter: 38mm (1.5 inches) T/S Parameters (Tested on a Klippel): Electrical Parameters       Re 3.43 Ohm electrical voice coil resistance at DC Le 0.899 mH frequency independent part of voice coil inductance L2 1.32 mH para-inductance of voice coil R2 13.71 Ohm electrical resistance due to eddy current losses Cmes 610.26 μF electrical capacitance representing moving mass Lces 20.57 mH electrical inductance representing driver compliance Res 34.13 Ohm resistance due to mechanical losses fs 44.9 Hz driver resonance frequency         Mechanical Parameters       (using laser)       Mms 54.697 g mechanical mass of driver diaphragm assembly including air load and voice coil Mmd (Sd) 51.475 g mechanical mass of voice coil and diaphragm without air load  Rms 2.626 kg/s mechanical resistance of  total-driver losses Cms 0.229 mm/N mechanical compliance of driver suspension Kms 4.36 N/mm mechanical stiffness of driver suspension Bl 9.467 N/A force factor (Bl product) Lambda s 0.046   suspension creep factor         Loss factors       Qtp 0.538   total Q-factor considering all losses Qms 5.879   mechanical Q-factor of driver in free air considering Rms only Qes 0.591   electrical Q-factor of driver in free air considering Re only Qts 0.537   total Q-factor considering Re and Rms only Other Parameters       Vas 13.1298 l equivalent air volume of suspension n0 0.194 % reference efficiency (2 pi-radiation using Re) Lm 85.07 dB characteristic sound pressure level (SPL at 1m for 1W @ Re) Lnom 85.74 dB nominal sensitivity (SPL at 1m for 1W @ Zn)         rmse Z 4.04 % root-mean-square fitting error of driver impedance Z(f) rmse Hx 2.29 % root-mean-square fitting error of transfer function Hx (f) Sd 201.06 cm2 diaphragm area Owner's Manual Features of REC121: 3/4" MDF Silver Tipped Screw Down Spring Loaded Terminals Finished with Bed Liner Specification: Air Space: 0.80 Cubic Feet (per sub) Mounting Depth: 11.25" Tuning Frequency: 33Hz Dimensions: 54.5" x 13.875" x 14.5" Complete Dual Subwoofer Enclosure Installation Kit! Includes: 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal) 20 Feet of 14 AWG Blue Speaker Wire 4 Spade Terminals This accessory package includes everything you need to install two subwoofers into an enclosure, and wire your enclosure to your amplifier. This package is a top of the line accessory package which we put together and tested. The drywall wood screws were hand selected by our installation experts because they drill into the enclosure very cleanly, without chipping the enclosure. The speaker wire is 14 gauge. This is way better than using 16 gauge. You can be 100 % sure that your enclosure will have a clean signal to the amplifier with this top of the line speaker wire. These spade terminals have also been hand selected by our installation experts to make the internal wiring simple, secure, and to run the audio signal cleanly.