Package Includes:

• (1) Rockville K5 W8K5S4 8" 800w 4 Ohm Car Audio Subwoofer Sub 200w RMS CEA Rated!
• (1) Rockville RSE8 Single 8" 0.55 cu. ft. MDF Sealed Car Sub Box Subwoofer Enclosure
• 10 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
• 12 Feet of 14 AWG Blue Speaker Wire
• 2 Spade Terminals

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Video of K5 SERIES:

Features of W8K5S4:

• 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