(2) Rockville W12K9D4 12" 8000 Watt Car Subwoofers Dual 4-Ohm Subs CEA Compliant

$498.00 $274.90 Save 45%
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Product Description

Price is for (2) Rockville W12K9D4 12"4000w Car Audio Subwoofer Dual 4-Ohm Sub CEA Compliant 

Features of W12K9D4:

  • Rockville W12K9D4 K9 Series 12" Dual 4-Ohm Car Subwoofer
  • Peak Power Handling: 4000 Watts
  • Program Power Handling: 2000 Watts   
  • CEA Rated RMS Power Handling: 1000 Watts 
  • 3" 4-Layer Black Aluminum Voice Coils Wound with OFC Wire Made in USA
  • This voice coil is stable up to 240 degrees celcius! The voice coil windings are made in the USA!
  • Double Stacked 190 Oz High Quality Magnet
  • Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight
  • Two Chrome-Plated Binding Post Terminals
  • Black Non-Pressed Paper Cone With Beautiful Finish
  • Our cones are ultra-stiff. They are thicker and stronger than other subs on the market making our subs able to handle more power.
  • Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion
  • Red Stitching Cone Reinforcement Ensures Long Life
  • New Ultra-stiff  PolyPropylene (PP) Dustcap
  • Impedance: Dual 4-Ohm Voice Coils
  • Vented Hole on T-yoke Enhances Heat Dissipation
  • Special Custom Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet
  • Custom Rockville Mounting Gasket Looks Beautiful 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
  • Nomex Spider provides tear resistance, strength and long-term reliability over regular cotton and poly cotton spiders
  • Cutout Diameter: 11.13” inches
  • Mounting Depth: 6.85” inches
  • Frequency Response: 33 Hz - 1.5K kHz
  • 10mm T-Yoke + 10mm Washer
  • Sensitivity: 83dB
  • Sealed Enclosure Volume: 0.9 – 1.47 Cubic Feet
  • Vented/Ported Enclosure Volume: 1.8 – 2.75 Cubic Feet
  • XMAX is 28MM
  • Weight: 28.67 Lbs.
  • Shipping Weight: 33 Lbs.
  • Shipping Box Dimensions: 14.57" x 14.57" x 10.83" Inches
  • XMAX: 28MM

Detailed Info:

  • Body: Non-Pressed Paper
  • Gap 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)

TS Parameters:

  Series Parallel
Fs  38.09 Hz 38.09 Hz
Qms 7.88 8.28
Cms 0.0708 mm/N 0.0708 mm/N
Bl    22.48 N/A 10.90 N/A
Zmin    11.50 O   2.69 O
Re   8.30 O 2.20 O
Qes  0.97 1.09
Mms      246.6818 g 246.6818 g
dBspl       83.97 83.45
L1kHz        7.31 mH 1.82 mH
Sd 527.1784 cm² 527.1784 cm²
Qts 0.86 0.97
Rms  7.59 Om 7.13 Om
VAS  27.4719 L / .97 cu ft 27.4719 L / .97 cu ft
L10kHz 2.74 mH 0.69 mH

 
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