NVX XQW102, XQW104, XQW122, XQW124 User Manual

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The X-Series
Thank you for choosing the NVX X-Series. Our X-Series is a crowning achievement of modern loudspeaker engineering – decades of research, development and installation experience have combined to create a truly remarkable subwoofer. Our uncompromising approach to manufacturing is unique in the industry, and shines
through brightly in the quality and performance of the X-Series. We are proud to build the nest subwoofers on the market today, and we are condent you will soon be proud to own one.
and tonal quality that is stunning. To mold our woofers into high delity bass machine, we brought them home to the
United States. We refused to compromise the sound, output or durability, so we assembled a team of engineers who have designed some of the most groundbreaking and celebrated products in subwoofer history. Our US team added
patented technologies to dramatically increase our subwoofers’ output potential without sacricing the sound accuracy
we worked so hard to capture.
Read on to learn about the features incorporated into our X-Series subwoofers that separate them from the competition.
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Cone
After testing scores of different cone materials, we decided on a custom blend of nely milled pulp & Egyptian Papyrus bers. This stiff yet lightweight material produces spectacularly accurate bass with a rich, natural tonal quality prized by audiophiles. The smooth matte nish of the cone offers a sleek, modern accent to the interior of any car.
Surround/Suspension
The X-series include oSd surround technology (U.S. Patent #7,031,487 B2) which is an innovative design where the surround is attached vertically. As a result, the X-Series have 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.
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Aluminum Shorting Ring
Perhaps the most distinguishing component of the X-Series subwoofers is the innovative aluminum shorting ring sys­tem. This technology prevents a rise in inductance caused by the movement of the driver, which has several positive
impacts on the subwoofers’ performance:
1. Improved power delivery to the voice coil
2. Decreased inductive distortion
3. Improved cone linearity
4. Improved high-end extension
5. Decreased risk of overheating
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What is this shorting ring?
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.
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Aluminum Shorting Ring
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So why does it work?
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 ux and prevent modulation of the cone resulting in tighter, more accurate bass.
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