NVX XSPTW, XSP65, XSP525, XNET2 User Manual
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The X-Series Component Speakers
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 component
speaker system. 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 speakers on the market today, and we are
condent you will soon be proud to own them.
Great loudspeakers begin with great engineers, and for the X-Series we partnered with the very best, bringing together
experts from around the world. The X-Series began in Denmark as a vision of our renowned European Hi-Fi team; dreams
soon gave way to reality as our extraordinary engineers transformed decades of knowledge and experience into a state-ofthe-art component speaker with warmth and crisp detail that is simply stunning.
To optimize our speakers for the harsh automotive environment, we brought them home to the United States. We refused to
compromise the sonic performance or durability of our product, so we assembled a team of engineers who have designed
some of the most ground-breaking and acclaimed products in car audio history. Advanced design techniques were used to
dramatically improve the off-axis response for an enhanced stereo image.
Read on to learn about the features incorporated into our X-Series component speakers that separate them from the
competition.
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The Tweeter
29mm Silk Dome
For decades silk has been the reference standard for tweeter composition, as it offers crisply detailed highs with
characteristic warmth. With a diameter in excess of 1-1/8”, the wide dome of the tweeter enables it to play at high volumes
with distinct clarity and improves off-axis response for enhanced imaging.
Ring Radiator
Although the tweeter is by far the smallest speaker in a complete audio system, it’s actually responsible for playing the largest range of frequencies. The behavior of the tweeter when playing different frequencies can vary dramatically.
– Lower notes tend to resonate from the center of the dome, while higher frequencies are produced by the edges and
surround. The ring radiator design prevents the surround from decoupling at higher frequencies, improving the clarity and
delity at these higher notes in addition to relieving strain on the surround.
Dimpled Dome
Since most factory speaker locations are less than ideal, it can be very challenging for the installer to obtain proper imaging.
To ensure optimal performance even in subpar locations, we incorporated a dimple into the center of the dome. This improves the dispersion pattern for improved response both on and off axis.
Robust Tweeter Chamber
Great care was taken to maintain even compression on the dome throughout the full range of excursion, resulting in more
linear movement and more dened highs. The ample tweeter chamber also helps lower the resonant frequency, which improves imaging and offers a seamless transition from the midbass drivers.
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The Woofer
Cone
After testing scores of different cone materials, we decided on a custom blend of nely milled pulp and Egyptian Papyrus bers. This stiff yet lightweight material produces spectacularly accurate midbass 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
To achieve the most authentic and accurate sound, we engineered our midwoofer to be as responsive as possible. We
utilized a special low damping rubber surround that maintained linear movement better than any other material we’ve
tested. The X-Series also features a relatively soft spider to reduce unwanted mechanical stiffness.
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What is this shorting sleeve?
Copper Shorting Sleeve
The shorting sleeve is a conductive copper sleeve 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 drivers 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 midbass spectrum. In the X-Series midwoofer, the shorting
sleeve simply absorbs changes in inductance, optimizing the sound quality, output potential and frequency response of
the driver.
Perhaps the most distinguishing component of the X-Series midwoofer is the innovative copper shorting sleeve system. This
technology prevents a rise in inductance caused by the movement of the driver, which has several positive impacts on the
woofer’s performance:
• Improved power delivery to the voice coil
• Decreased inductive distortion
• Improved cone linearity
• Improved high-end extension
• Decreased risk of overheating
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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 midwoofer to produce sounds and
artifacts at higher frequencies outside of the normal playback range. Our copper shorting sleeve absorbs these
changes in inductive energy, resulting in crisp, distortion-free sound.
● 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 sleeve, we absorb these changes in
magnetic ux and prevent modulation of the cone resulting in tighter, more accurate mids.
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● Improved high-end extension
► The low-pass lter 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 lter out notes at
the top of the midwoofer’s frequency range. Our copper shorting sleeve 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 sleeve has on the speaker’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.
If it’s so great, why don’t others use it?
Where we see an opportunity to build a better product, other manufacturers see an opportunity to maximize prots.
Shorting sleeves require additional materials and add complexity to the manufacturing process. Rather than skimp on
the shorting sleeve and make inferior midwoofers, we ultimately decided to create a masterpiece. The most
experienced engineering team in the industry has painstakingly designed our X-Series components, and we rmly
believe that you will hear the difference.
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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 airow 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. The unique cast aluminum mounting ring offers a sleeker and more modern aesthetic than typical
bulky rubber or plastic designs.
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High Temperature Voice Coil
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