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4000W JBL + Sound Dampening Material Bass Bundle

12" JBL W12GTi MKII GTI Series Subwoofer + NVX Sound Dampening Material

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12" Dual 6 Ohm GTI Competition Level Subwoofer • 4000W Max • 700W RMS • Kevlar Paper Cone • Ten 18" x 32" Pieces of Dead Shield Sound Dampening Material • Eliminates Road Noise • Simple To Install • Increases sound quality and output

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Product Highlights


12" Dual 6 Ohm GTI Competition Level Subwoofer • 4000W Max • 700W RMS • Kevlar Paper Cone • Ten 18" x 32" Pieces of Dead Shield Sound Dampening Material • Eliminates Road Noise • Simple To Install • Increases sound quality and output

Description


JBL brand icon

Authorized dealer

JBL plus Sound Dampening Material Bass Bundle

This Sonic Electronix Exclusive Bundle showcases a 12" Dual 6 Ohm JBL GTI Series Subwoofer. This subwoofer is rated at 700 watts RMS of continues power and 4000 watts of Max power. The subwoofer is equipped with a Kevlar paper cone, and a Nitrile-butylene surround for rigidity and performance. It is also equipped with 3" voice coils, and a Differential Drive motor design. With symmetrical field geometry for ensured linear movement, this JBL GTI series subwoofer is sure to provide efficient sound and bass for long periods of time. In order to improve the all around sound of your audio car system, this bundle also includes ten 18" x 32" pieces of Dead Shield sound dampening material. This dampening material will help reduce engine noise, vibrations, road noise and rattling to give you a higher sound quality. Four step peel and stick application makes installation simple and efficient. This sound dampening material is sure to improve the over all quality and output of your system.

JBL W12GTi MkII

12" Dual 6 ohm GTi Series Car Subwoofer
Quantity: 1

JBL W12GTi MkII Features:
  • 12" Dual 6 Ohm GTI Competition Level Subwoofer
  • Power Handling:
    • Peak: 4000 watts
    • RMS: 700 watts
  • Impedance: Dual 6 ohm
  • Kevlar paper cone woofer
  • Nitrile-butylene surround
  • Differential Drive Design motor
  • Symmetrical field geometry ensure linear cone travel and low distortion
  • 3" Voice coil
  • Frequency response: 18-1000 Hz
  • Sensitivity: 91 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

NVX SDBP40 40 ft Bulk Pack (Entire Car)

40 Square Feet of Sound Dampening Material (Ten 18" x 32" Pieces)
Quantity: 1

NVX SDBP40 Features:
  • Ten 18" x 32" Pieces of Dead Shield Sound Dampening Material
  • Eliminates road noise
  • Quiets vibrations
  • Stops rattles
  • Increases SPL
  • Reduces heat
  • Easy to form aluminum conforms to desired area of vehicle with ease
  • Four step peel and stick design for easy installation
  • Increases sound quality and output of car audio system
  • Up to 30% thicker than the leading competitors
  • 40 Square feet total
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Dimensions (each piece): 18"L x 32"W

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Specifications & Details


Subwoofer Specifications
Series
GTi Series
Subwoofer Size
12"
Peak Power Handling
4000 watts
RMS Power Handling
700 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
6 ohm
Voice Coil Diameter
3"
Frequency Response
18 - 1000 Hz
Sensitivity
91 dB
Xmax (millimeters)
20.32 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Silver
Woofer Composition
Kevlar Reinforced Pulp Paper
Woofer Surround
Nitrile Butadiene Rubber NBR
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
1.0 cubic feet
Maximum Sealed Box Volume
1.0 cubic feet
Minimum Ported Box Volume
2.25 cubic feet
Maximum Ported Box Volume
2.25 cubic feet
Top-Mount Depth (Mounting Depth)
10-1/4"
Cutout Diameter
11"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
31.83 Hz
Equivalent Compliance (Vas)
44.75 liters
Total Speaker Q Value (Qts)
0.51
Electrical Q Value (Qes)
0.55
Electrical Resistance of Voice Coil (Re)
3.20 ohm
Mechanical Q Value (Qms)
6.68
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

W12GTi-MkII_SDBP40

Weight:

73.00lbs

Internal SKU:

w12gtimkii_sdbp40

Internal Product ID:

37352

Product and How-to Videos


  • Harman International: The Pursuit of Great Sound
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.