[Acoustic Feast for Hardcore Players] Nissan Amanda: When the precision of Japan’s Biwei meets the willfulness of Jinlang Supreme

In the world of car audio modification, there are always some players who are not satisfied with the routine. What they pursue is not only the shock of hearing, but also the ultimate restoration and reproduction of sound art. The protagonist this time–Nissan Amanda staged a textbook-level sound system remodeling for us. It takes Japan’s BEWITH as the core, builds a precise and delicate acoustic skeleton, and uses a “deviant” pioneering work-placing the Jinlang Supreme eight-inch subwoofer unit on the door panel as a mid-bass 。

 

1.Soul Core: The Pure Voice of Japan Biwei

A top-notch sound system necessarily requires a strong core. The car owner chose Japan’s Biwei star product, which established the system’s noble and accurate timbreOfFundamentals.

 

●  Biwei Blue Core Set Speaker:
Biwei“Blue Core” technology is its landmark achievement. Greatly improves magnetic line linearity and reduces distortion by embedding a special blue metal core in the center of a highly magnetic neodymium magnet. This allows the horn unit to have amazing transient response and detail resolution, and whether it is the subtle vibrato of the human voice or the overtone of the instrument, it can be reproduced clearly and completely. The mid-bass unit is stiff and powerful, and the tweeter unit is clear and transparent without being harsh, providing a solid and gorgeous base for the whole soundstage.

 

●  BiweiMirror player：
Biwei mirror player is a brand that willThe core work of “visual aesthetics” and “auditory philosophy”. Far from an ordinary digital playback device, it is the “source of the soul” of the entire sound system. Inside the player, selected top-of-the-line DAC chips cooperate with Bi Wei’s exclusive analog amplifier circuit to transform pure digital signals into highly analog and emotional music signals. The final hearing feeling it brings is an accurate restoration of extremely dark background and details. The sound field is open and stable, and the positioning and texture of the instrument are vivid, creating an unparalleled sense of “air” and musical presence.

 

●  Biwei double decoding:
No matter how good the speaker is, it needs pure“Grain”. The signal output by the original main engine or ordinary DSP is inevitably doped with digital noise and distortion. The function of the Biwei decoder is to act as the “digital goalkeeper” of the system, performing the highest accuracy digital-to-analog conversion and reforming of the audio signal, filtering out noise, and restoring the most authentic digital audio signal. It ensures that the purest and high-fidelity analog signal is delivered to the post-stage power amplifier, which is the key prerequisite for giving full play to the strength of Biwei speakers.

 

○  System collocation comments:The Biwei blue core unit is responsible for the solidity of the medium and low frequencies and the delicacy of the medium and high frequencies, while the blue mirror treble is responsible for the gorgeous extension and precise sound field of the extremely high frequencies, and then the Biwei decoder provides the pure sound source. The three form a perfect closed loop, and the purity, density and detail expression of the sound have reached the top level.

 

Two,A shocking move: Jinlang Supreme eight-inch subwoofer door panel box art

If the Biwei system isIf the “professional background” is rigorous, then the modification of the door panel is “genius” willfulness.

“Few people in the industry dare to change!”-This statement is true. Usually, the subwoofer unit is placed in a special subwoofer box in the trunk because of its long stroke, high power and large volume box. And a nobleJinlang Supreme eight-inch subwoofer unitInstalled on the door panel to replace the traditional midwoofer is undoubtedly a subversion of the traditional audio modification concept.

 

●  The core of door panel box modification: data matching and acoustic structure

As the case shows, the core of the door panel box is anything but simple“Fill Volume”. It is a rigorous acoustic project:

►  Accurate data support:Each speaker unit has its best resonant frequency and equivalent volume. It is necessary to accurately measure the parameters of Jinlang’s eight-inch unit, and based on this, accurate mathematical modeling of the internal space of the door panel is carried out. When making the box, it is necessary not only to achieve the calculated volume, but also to optimize the internal structure, suppress standing waves and ensure a flat low-frequency response.

►  Scientific box technology:Through the use of specialist equipment and materials, a strong, sealed independent cavity is constructed. This cavity is like a “home” tailored to the unit, so that its piston movement (sound generation) is completely controlled by the acoustic characteristics of the cabinet, rather than the loose door panel cavity.

►  Anti-corrosion and waterproof treatment:Door panel box needsUse professional car interior waterproofingAnticorrosive materials, uniformly coated on the boxOutsideParts and joints to ensure that they are in a dry and stable working environment for a long time, ensuring the unit life and stable sound quality.

►  The effect brought:After this transformation, the medium and low frequencies emitted by this eight-inch unit are clean and neat, and the dive is extremely deep and flexible. You can feel the shape of the drums, the strength of the bass plucking, rather than the muddy rumble.

 

Three,Craftsmanship:Visual and auditory dual aesthetics of A-pillar inverted mold

To match the professionalism of the door panel box,The inverted mold of the A-pillar has also reached the hardcore level.

 

●  Positioning:The directivity of trebles, especially flat trebles like the Biwei Blue Mirror, is crucial. The modifier passed repeated sound field tests to convert the tweeter unitAnd a mid-bass unitPrecise positioning inA-pillar andThe triangular position of the door panel forms the best incident angle with the driver’s seat, thereby achieving the best listening feeling of the emperor’s seat.

 

●  Process:Fully hand-customized cups, which blend perfectly with the original A-pillar trim panel. From the initial skeleton production, to repeated polishing and shaping, and then to the final coating, every step has condensed the modifierFuPatience and skill. The final result is not only visually natural, without any sense of disobedience, but also achieves the best diffusion and positioning effect acoustically.

 

Four,System summary and future upgrade reverie

This set consists of“Biwei Blue Core Two-way + Biwei Blue Mirror Treble + Biwei Decoding”As the core, with“Jinlang Supreme Eight-inch Door Panel Box Middle Bass”A proud and pioneering system has built a mobile concert hall with accurate sound, amazing dynamics and rich details.

 

“In the whole systemJustMissing a Feishi power amplifier” 。 This is not a regret, but a foreshadowing for the ultimate future. Both Biwei and Jinlang units have extremely high requirements for drive power and control. A top-level power amplifier, such as the Korean Feishi (PHASS) power amplifier, with its pure timbre, powerful power output and extraordinary damping coefficient, can better control every subtle movement of the horn unit like a pair of powerful hands.

If you join the concubine power amplifier in the future, it will be even more powerful:

►  More control:Make the low-frequency retraction and amplification of the eight-inch Jinlang unit more freely, and the transient response reaches its peak.

►  Higher resolution:Provide more abundant and purer energy for the Biwei system, and further enhance the details and airy feeling of the blue mirror treble.

►  Sublimation of the whole:As the “engine”, the power amplifier will completely release the full potential of this top speaker, make the sound effect tend to be perfect, and achieve a truly impeccable mobile Hi-End music hall.

 

Overall,The audio modification of this Nissan Amanda has gone beyond the general upgrade. It is a practice of sound belief. It uses the ultimate precision of Japan’s Biwei to define the sound“Quality”; It also reinterprets the “quantity” of sound with the willful collocation of Jinlang Supreme. In the face of professional data, top craftsmanship and imagination that dares to break through, anything is possible.

This is the happiness of hardcore players.