A double gift of acoustics and craftsmanship: Customized upgrade of Land Cruiser’s red heart audio system

The essence of a set of car audio system modification that truly reaches high standards and realms is far more than a single dimension of listening experience. It is essentially a comprehensive artistic creation that combines precision engineering aesthetics and subjective listening enjoyment. Among them, scientific and reasonable equipment matching scheme and profound and professional system tuning technology are undoubtedly the core of giving the whole system soul and vitality. The owner of the Land Cruiser who was modified this time is an audio enthusiast who has extremely high aesthetic standards and technical requirements for the details of the modification process. He often emphasizes a profound and interesting point: although the ultimate goal of sound modification is for the pleasure and enjoyment of the ears, if the process in the modification process is rough and the visual perception is poor, it will directly and profoundly affect the listener’s psychological feelings and immersion state. In other words, if you can’t get exquisite and harmonious satisfaction visually, then even if the potential of the system is great, it will be difficult to stimulate a completely relaxed and happy mood to savor the rich emotions and subtle charm contained in music. This insight can be described as penetrating-vision, as the most direct and keen perception channel of human beings, transmits information that can quickly stimulate and affect the entire neural perception system of the human body, thus setting the emotional tone for the final auditory experience.

Based on this concept, car owners have identified Japan’s Bewith red heart series horns as the upgrade core of this dream. The third-generation speaker unit of Biwei C series carries the top acoustic research and development technology in the global car audio field. Its unit diaphragm is precisely manufactured with special formula and rare metal materials, combined with its iconic “eccentric off-axis” patented design, which makes the acoustic radiation have excellent directivity and phase consistency. This design puts forward almost stringent requirements for installation: in order to give full play to its technical advantages, each unit must be installed in an independent box customized in strict accordance with official acoustic data to ensure that it can still achieve accurate sound restoration in the complex acoustic environment in the car.

Land Cruiser’s Top Car Audio System Modification Detailed Configuration List

1. Audio source host: Biwei MM-1 D high-definition digital audio player (as the core audio source of the system, providing high-resolution signals)

2. Audio processor: Biwei P&P-8 high-performance multi-channel DSP processor (responsible for system-wide digital signal processing and accurate frequency division)

3. Front sound field speaker: Biwei C 50 III tweeter + C 130 III mid-woofer unit (third generation), and complete customized cabinet modification for it

4. Rear sound field speakers: German Ground Zero high-quality two-way package (used to supplement the surround sound field)

5. Front sound field power amplifier: Biwei P 100-R reference level mono power amplifiers, a total of four units (providing independent, abundant and pure drive for each speaker unit in the front sound field in an active sound division mode)

6. Rear sound field power amplifier: one zero point reference stage two-channel power amplifier

7. Subwoofer: An 8-inch subwoofer of the American DD (Digital Designs) brand (providing a deep, powerful and responsive low-frequency foundation)

8. Bass-specific power amplifier: an American Rockford Fosgate P 500.1 D high-power mono Class D power amplifier

9. Complete set of wires: Barney (brand name) high-grade oxygen-free copper speaker wires and high-purity shielded signal wires are used to ensure minimal signal transmission losses

10. Power system: Install special auxiliary batteries for high-performance audio and equipped with Biwei power manager to provide stable, pure and sufficient power supply for the entire high-power system

The following is the process record of this complex and sophisticated modification project. The first task is to make a tweeter box protective cover and a special sealed box for the door horn for the core front sound field speaker unit that meets its acoustic characteristics.

 

Experienced modification masters are carefully planning and designing the three-dimensional shape and internal volume of the box, which is the basic project that determines the final sound quality.

After the design drawings are confirmed, professional tools are used to accurately cut and shape the high-density board.

After preliminary assembly, the prototype of the box has basically appeared, and its structural parameters are highly consistent with the design drawings.

The overall appearance of the main structure of the box after the modification is completed, showing exquisite carpentry skills and rigorous engineering structure.

The complete effect after the elaborate mesh panel and precious Biwei horn unit are installed on the custom cabinet, the craftsmanship and equipment complement each other.

In particular, the structural details and surface treatment process inside the box are displayed. Every joint and chamfer have been carefully polished.

This is the semi-finished state of the box built for the tweeter after the structural production and preliminary surface treatment are completed. Next, it will enter the stage of spray painting and coloring to perfectly integrate with the original car interior.

The master is installing the sophisticated Biwei tweeter into the finished and painted custom cabinet with great care and meticulous attitude.

The final renderings of the installation of the tweeter and customized box at the A-pillar position in the car realize the unity of acoustic direction and visual aesthetics.

 

As the sound source of the system, the installation effect of the Biwei MM-1 D high-definition player not only ensures the convenience of operation, but also keeps the interior clean and beautiful.

After the overall modification of the system is completed, the macro effects of reasonable and orderly layout of each component are at a glance.

 

Four Biwei P 100-R mono power amplifiers are cleverly installed in the bottom space of the passenger seat. The installation base is specially made of aluminum plate with high thermal conductivity, which not only ensures the firmness of fixation, but also effectively evenly disperses and exports the heat generated during the operation of the power amplifier, ensuring its long-term stable operation.

The Biwei Power Manager, which is responsible for managing the power distribution of the entire vehicle’s audio system, is neatly placed under the driver’s seat, which is easy to maintain and does not take up available space.

In order to ensure the absolute stability of the voltage under large dynamic conditions, the additional high-performance auxiliary battery for audio is installed in a suitable position in the engine compartment safely and standardized manner.