(2) Rockville K5 W12K5S4 12 1400 Watt Car Subwoofers+Vented Sub Box Enclosure

(2) Rockville K5 W12K5S4 12 1400w 4 Ohm Car Audio Subwoofer Sub 350w RMS CEA Rated! (1) Rockville RDV12 Dual 12 Vented Subwoofer Enclosure Box 1.55 CU FT 3/4 MDF
• 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

Features of W12K5S4:

• Rockville W12K5S4 K5 Series 12 4-Ohm Car Subwoofer
• Peak Power Handling: 1400 Watts
• Program Power Handling: 700 Watts
• CEA Rated RMS Power Handling: 350 Watts
• 2 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
• 50 Oz High Quality Magnet
• Cast Iron Basket With Black Sanded Finish
• Fiber Reinforced Ultra Stiff Black Non-Pressed Paper Cone ?C 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
• Impedance: Single 4-Ohm Voice Coils
• Vented Hole on T-yoke Enhances Heat Dissipation
• High BL Magnetic Motor Gap
• Cutout Diameter: 11.02 inches
• Mounting Depth: 5.03 inches
• Frequency Response: 25 Hz – 1.5K kHz
• 6mm T-Yoke + 6mm Washer
• Sensitivity: 88dB
• Sealed Enclosure Volume: 0.8 ?C 1.3 Cubic Feet
• Vented/Ported Enclosure Volume: 1.3 ?C 2.0 Cubic Feet
• Weight: 10.1 Lbs.
• Shipping Weight: 11.6 Lbs.
• Shipping Box Dimensions: 13.78 x 13.78 x 8.97 Inches

T/S Parameters (Tested on a Klippel):

Electrical Parameters

Re

3.31

Ohm

electrical voice coil resistance at DC

Le

0.944

mH

frequency independent part of voice coil inductance

L2

1.468

mH

para-inductance of voice coil

R2

14.7

Ohm

electrical resistance due to eddy current losses

Cmes

871.67

??F

electrical capacitance representing moving mass

Lces

20.9

mH

electrical inductance representing driver compliance

Res

31.48

Ohm

resistance due to mechanical losses

fs

37.3

Hz

driver resonance frequency

Mechanical Parameters

(using laser)

• Package Includes: (2) Rockville K5 W12K5S4 12 1400w 4 Ohm Car Audio Subwoofer Sub 350w RMS CEA Rated!. (1) Rockville RDV12 Dual 12 Vented Subwoofer Enclosure Box 1.55 CU FT 3/4 MDF. 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. .
• Features of W12K5S4: Rockville W12K5S4 K5 Series 12 4-Ohm Car Subwoofer. Peak Power Handling: 1400 Watts. Program Power Handling: 700 Watts. CEA Rated RMS Power Handling: 350 Watts. 2 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. 50 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 Dustcap is light weight and efficient helping the sub to play louder even if your amp is not so powerful
• Features of RDV12: Rockville RDV12 Dual 12 Vented Subwoofer Enclosure. Proudly Made In The USA. Using Only The Finest Quality Materials – For The Best Level of Performance From Your Subs!. 3/4 USA Heavy Duty MDF Construction. 1 MDF front face plate makes your subwoofer sound even better!. Machine precision cut mounting holes. Top of the line Glue for extra durable adhesion. High quality GOLD spring loaded terminals
• Designed. tested. and engineered to work with most of today’s popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system.