Reshaping the boundaries of hearing: Volkswagen Touron is equipped with Bivii audio, opening up the Hi-Fi listening dimension like being on the spot

 

Overview of in-depth customized and upgraded configurations of Volkswagen Touron’s entire car audio

1. Sound source system: Original car machine + Alpine A 09 top lossless player (dual audio input)

2. Audio processing core: Japan’s Bewith DSP-8-channel digital audio processor

3. Front sound field speaker: Biwei A 50 III tweeter + A 130 III mid-woofer unit (the core of the flagship three-way combination)

4. Rear sound field speaker: Reckhorn ML-C 6.2 two-way package (directly promoted by Alpine A 09 host, providing surround atmosphere)

5. Ultra-low frequency system: American Rockford Fosgate P series 8-inch subwoofer (customized special cabinet)

6. Front sound field power amplification: AiVo KING series top four-channel power amplifier (independently driven front sound field treble and mid-bass)

7. Subwoofer power amplification: Laifu R series single-channel high-power amplifier (specially designed to provide abundant energy for subwoofer)

8. Power supply and management system: A set of dedicated audio auxiliary batteries + a Biwei power manager (to ensure system dynamics and purity)

9. Signal and power transmission: A complete set of Brani high-end audio cables

10. Core acoustic process: Fully customized cabinet system (including door panel mid-bass cabinet, A-pillar tweeter cabinet, trunk subwoofer cabinet)

 

The following will use detailed graphic records to fully demonstrate the entire modification process and core process details of this in-depth customization, and a real car sound effect audition will be attached at the end of the case for your tasting.

 

It is often said in the industry that car audio equipment is essentially a “semi-finished product”. The more excellent the equipment is, the higher its requirements for installation environment, acoustic matching and debugging accuracy, and the more it is inseparable from a truly professional modification team to inject soul into it. Since its establishment in 2011, the music broadband modification shop has always focused on the vertical field of car audio modification. In 2013, we first came into contact with Bewith car audio, a palace brand from Japan. Its ultimate pursuit of sound philosophy and precise craftsmanship coincided with our concept of “focus, professionalism and extreme”. Since then, a deep and indissoluble bond has been formed. All components of Biwei Audio, as small as a screw, are designed and manufactured in Japan, and have never been OEM produced in any other country. This ensures the purity and highest quality control standards of its products from beginning to end. It can be called The tip of the pyramid in the current field of car audio modification. At the same time, the Biwei brand also has extremely strict requirements for system modification and adjustment, which is precisely the best touchstone for the strength of professional modifiers.

 

In order for each unit of Biwei speakers to unleash the full potential contained in its original design, providing it with a customized cabinet that meets the official strict acoustic parameter requirements is the first prerequisite. The first step of our upgrade is to create an exclusive “acoustic home” for the speakers in the doors. Below is the complete detailed process of making the door panel box from scratch.

All box components are first cut and formed from high-quality plates through high-precision numerical control (CNC) engraving machines, ensuring that the size, angle and radian of each piece of material are exact, laying a solid foundation for subsequent precision assembly.

 

According to the box model, the inside of the original door panel is accurately polished and trimmed to ensure that the customized box can be embedded tightly and firmly combined with the original car structure.

Fabrication and installation of box guide pipe. This is one of the most critical links to determine the low-frequency response, timbre and efficiency of the cabinet. Its length, diameter and opening position have been strictly acoustically calculated.

The door panel interior custom box body is assembled, fixed and finished with the final effect of the preliminary treatment. A robust, sealed and volume-accurate acoustic environment has been formed.

Finally, the pre-modified decorative panel, which combines practicality and aesthetics, is installed in place to complete the reconstruction of the internal structure of the door panel.

This is the original internal state of the original door panel before any modification, for comparison and reference.

For high-frequency units, we also spare no expense. The exclusive box of Biwei tweeter also uses CNC engraving machine to make components, which are then finely spliced and polished by hand to ensure that the shape of its internal cavity fully serves the acoustic characteristics of the tweeter.

The independent effect of the tweeter cabinet after the production is completed, its craftsmanship and texture have been seen.

After being installed on the A-pillar in the car, its shape naturally blends with the lines of the original car, and its appearance is simple and unpretentious, but it reveals a thick texture and professional style in the details.

 

  

The subwoofer cabinet has been cleverly designed and installed in the unused space on the right side of the trunk. This complementary box process not only saves precious trunk volume to the maximum extent, but its precisely calculated box structure can make the bass unit play an effect far beyond that of ordinary finished boxes, which is a concentrated expression of professional modification value.

The customized bass cabinet is firmly fixed on the body sheet metal to ensure that it is stable and silent when the vehicle is driving.

The final effect after the subwoofer system is installed and the appearance treatment is completed, which is in harmony with the original car interior style.

The installation details of the rear sound field Rekal speaker also pay attention to sealing and fixing, ensuring that it can provide clear and stable sound supplement as a surround channel.

After the successful completion of the entire vehicle sound insulation and noise reduction project, the standardized layout of the entire vehicle audio system wires began. All power lines, signal lines and speaker lines follow the principle of “shortest path, avoiding interference and firm fixation”, which is the basic guarantee of good sound.

The Alpine A 09 flagship player host and the auxiliary battery specially added for the audio system are hidden and reasonably installed under the driver’s seat, which is convenient to operate without taking up space.

The Laifu single-channel power amplifier, which is responsible for driving the subwoofer, and the Biwei power manager, which is used to purify and stabilize the power supply of the whole vehicle, are installed side by side under the passenger seat, with regular layout and good heat dissipation.

The Aiwei four-channel power amplifier that drives the front sound field speaker is hidden and installed in the decorative panel on the left side of the trunk. This power amplifier is independently responsible for the treble and midwoofer units of the front sound field, providing abundant and pure power.

All terminals use high-quality connectors and are treated with soldering or crimping processes to ensure firm connection points and zero loss of signal transmission, which is fundamental to reliability.

After all power amplifiers are installed and wired, the overall effect is that the lines are orderly, reflecting extremely high construction standards.

Installation details of the safety holder for the main power supply of the sound system. As the safety patron saint of the whole system, its installation position, fixing method and wire diameter selection are all very important.

The final effect after the installation of the power safety holder is clearly marked, easy to overhaul and stable installation.

The control panel of the Alpine A 09 main unit is cleverly installed in a position that is easy to operate and visually comfortable for the driver, achieving the perfect combination of function and convenience.