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  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
  • NVX XQW122 12
NVX XQW122 12" Car Subwoofer 2 ohm DVC (set of 2)
  • SKU :NVX-XQW122-12-2pk
  • Brand : NVX Audio

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Milled Pulp & Egyptian Papyrus Fiber Cone

After testing scores of different cone materials, we decided on a custom blend of finely milled pulp & Egyptian Papyrus fibers. This stiff yet lightweight material produces spectacularly accurate bass with a rich, natural tonal quality prized by audiophiles. The smooth matte finish of the cone offers a sleek, modern accent to the interior of any car.

Patented Surround & Suspension Technology

We’re all about getting the most bang for our buck, a key reason why we chose to include oSD technology in the X-Series woofers. The surround is attached vertically using a patented method, giving the X-Series subwoofer an extra 8-12% more surface area than competing subwoofers with the similar mounting dimensions. The surround itself is constructed with a multi-radius elliptical edge, which keeps the inward movement of the surround perfectly symmetrical with the outward movement. This contributes to a more predictable and consistently linear cone movement for smooth, even bass every time.

Aluminum Shorting Ring

Perhaps the most distinguishing component of the X-Series subwoofer is the innovative copper shorting ring system. This technology prevents a rise in inductance caused by the movement of the driver, which has several positive impacts on the subwoofer’s performance:

  • Improved power delivery to the voice coil
  • Decreased inductive distortion
  • Improved cone linearity
  • Improved high-end extension
  • Decreased risk of overheating


The shorting ring is a conductive aluminum ring placed in the air gap between the pole piece and the voice coil former to reduce inductance. Inductance can best be understood as the change in magnetic energy that occurs as the voice coil moves in and out of the air gap. In most subwoofers this energy is absorbed by the voice coil, causing impedance rise, introducing distortion and reducing the woofer’s ability to play at the top of the bass spectrum. In the X-Series subwoofers, the shorting ring simply absorbs changes in inductance, optimizing the sound quality, output potential and frequency response of the woofer.


  • Improved power delivery to the voice coil
    • Any increase in inductance correlates to an increase in voice coil impedance, meaning increased resistance to the input power. By preventing inductance rise, we effectively increase the amount of power carried to the voice coil, increasing the output potential of the woofer with each given watt.

  • Decreased Inductive Distortion
    • When inductive energy is introduced into the motor structure, it causes the subwoofer to produce sounds and artifacts at higher frequencies around the 500-1,000 Hz range. Our aluminum shorting ring absorbs these changes in inductive energy, resulting in crisp, distortion-free bass.

  • Improved Cone Linearity
    • A great deal of care was taken during the research and development process to ensure that the movement of the cone is as linear as possible. Since inductance is a change in magnetic energy, it’s easy to see how undesired inductance can alter the movement of the cone. By using our shorting ring, we absorb these changes in magnetic flux and prevent modulation of the cone resulting in tighter, more accurate bass.

  • Improved High-End Extension
    • The low-pass filter in a standard crossover network is basically just a coiled conductive wire with an iron core –very similar to the design of a voice coil. When the inductance of the voice coil increases, it begins to filter out notes at the top of the woofer’s frequency range. Our aluminum shorting ring eliminates these variations in inductance, allowing the woofer to play as it was intended.

  • Decreased Risk of Overheating
    • In addition to the positive impact the shorting ring has on the subwoofer’s sound quality, it also acts as an effective heat sink to carry heat away from the voice coil, which contributes to improved performance and durability.


It’s simple – it costs more! In addition to the additional materials, shorting rings also add complexity to the manufacturing process, raising the cost per woofer significantly. Our X-Series subwoofers have been painstakingly designed by the most experienced engineering team in the industry, and we saw no reason to sacrifice the unparalleled sound quality and performance we achieved just to save a few bucks.

3” High Temperature Aluminum Voice Coil

The stout 3" high temperature voice coil is constructed from a copper wire wrapped around an aluminum former. This industry standard design is powerful enough to readily drive the cone with strict linear control, yet at the same time remains efficient enough for the compact, space saving magnet structure. The black appearance of the coil is a result of the special treatment which is applied to improve power handling and heat dissipation.

Custom Low Turbulence Cast Aluminum Basket

Our custom basket offers several distinct advantages over traditional designs. We purposefully chose an especially open basket to improve airflow to reduce compression of the motor structure for both improved cone control as well as reduced back-wave interference. The 3-dimensional cast design dramatically increases the strength and rigidity of the basket while simultaneously reducing resonance. We chose aluminum, the industry standard for cast speaker baskets, as it offers an exceptional strength-to-weight ratio and is non-ferrous, thus eliminating risk of magnetic interference with the motor structure.

High-Excursion Strain-Relieved Tinsel Leads

At NVX we understand that the components of a subwoofer must work in harmony to achieve sonic excellence, and that a subwoofer is only as reliable as its weakest link. There is perhaps no better example of our relentless attention to detail than the unique attachment method of our tinsel leads. Whereas the leads of most subwoofers are simply glued atop the spider, ours are glued at the basin of each fold in the spider with enough slack on top for unrestricted excursion. This prevents damage to the leads as there is no tugging or pulling from the movement of the suspension, while keeping the leads anchored to prevent cone slap and mechanical noise.

Subwoofer Series:
Subwoofer Size:
RMS Power Handling:
400 watts
Voice Coil(s):
Impedance (Per Voice Coil):
2 Ohm
Voice Coil Diameter:
Frequency Response:
20 - 200 Hz
89 dB
Xmax (millimeters):
20 mm
Subwoofer Design:
Round / Circle
Main Cone Color:
Woofer Surround:
Magnet Structure:
Double Stacked
Subwoofer Grille:
Recommended Enclosure Type:
Ported / Vented or Sealed
Minimum Sealed Box Volume:
0.80 cubic feet
Optimum Sealed Box Volume:
0.92 cubic feet
Minimum Ported Box Volume:
1.1 cubic feet
Optimum Ported Box Volume:
1.43 cubic feet
Top-Mount Depth:
Cutout Diameter:
Free-Air Resonance (Fs):
29 Hz
Equivalent Compliance (Vas):
64 liters
Total Speaker Q Value (Qts):
Electrical Q Value (Qes):
Electrical Resistance of Voice Coil (Re):
5.8 ohms


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