(2) Rockville K5 W12K5S4 12" 1400 Watt 4 Ohm Car Audio Subwoofers CEA Rated Subs

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Product Description
Package Includes:
  • (2) Rockville K5 W12K5S4 12" 1400w 4 Ohm Car Audio Subwoofer Sub 350w RMS CEA Rated!


Video of K5 SERIES:


  • 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
  • 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: 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 – 1.3 Cubic Feet
  • Vented/Ported Enclosure Volume: 1.3 – 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

Detailed Info:

  • Body: Non-Pressed Paper
  • Gap Plate Inside Diameter: 80mm (3.14 inches)
  • Gap Plate Outside Diameter: 156mm (6.14 inches)
  • Gap Plate Thickness: 25mm (0.98 inches)
  • Yoke Outside Diameter: 145mm (5.7 inches)
  • Yoke Thickness: 6mm (0.23 inches)
  • Yoke Pole Diameter: 50mm (2 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 µF 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)      
Mms 130.02 g mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd (Sd) 117.731 g mechanical mass of voice coil and diaphragm without air load 
Rms 4.738 kg/s mechanical resistance of  total-driver losses
Cms 0.14 mm/N mechanical compliance of driver suspension
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