Exquisitely crafted, the sound is impressive: Audi Q 7 audio system is fully upgraded, and Japan’s Biwei and Aiwei flagship equipment create a professional listening space

In the field of car audio modification, the matching and combination of equipment is a deep knowledge. We always adhere to the core principle of simplifying complexity and pursuing refinement, and strive for simplification and efficiency in the selection of equipment. From the perspective of high-fidelity sound quality, if a sound system is too complex, it will not only significantly increase the overall budget, but also have a negative impact on the final sound presentation. Many music lovers have a common cognitive misunderstanding, that is, the more speakers there are, the better the sound effect will be. Designs such as three-way and four-way are often blindly admired; However, in terms of accurate sound restoration and phase consistency, coaxial speakers can often provide better performance, but their manufacturing process and technical costs are relatively higher. Considering the particularity of the interior space structure and the limitations of the listening environment, the two-way speaker unit is actually the most suitable and efficient choice.

Next, I will introduce to you in detail an actual case of Audi Q 7 upgrading Japan’s Biwei two-way speaker. Car owners mainly listen to popular music and English songs every day, and occasionally they need rock music to stimulate their inner passion. Based on this diversified listening preference, choosing the Biwei A series two-way speaker is the best solution, supplemented by the top four-channel power amplifier of the Aiwei brand for driving, jointly building an excellent cost-effective system; The subwoofer part uses a zero-point brand eight-inch woofer, which is specially driven by a zero-point two-channel power amplifier; The core tuning center of the entire system is served by Biwei Pure DSP, which provides eight channels of high-precision signal output.

 

This Aiwei four-channel flagship power amplifier has reached the strict standards of high-fidelity Hi-Fi, both in terms of aesthetic design and internal sound quality. Its output power has reached a strong level of 160 watts per channel. While providing abundant driving force, the description of sound details still maintains delicate and soft characteristics, and the dynamic performance of each frequency band is also extremely balanced.

The picture above shows a group photo of all the equipment used in this modification. At the explicit request of the car owner, all Biwei speaker units are installed in the original car location. Although the absence of customized cabinets may bring some restrictions to the full development of sound potential, the unique acoustic eccentric pointing core technology of Biwei speakers can still ensure that its sound quality performance easily surpasses most similar well-known brand products on the market.

The following will show the detailed modification construction process step by step, starting with the installation process of Biwei A 130 III mid-woofer unit.

Start by installing a pre-customized specialized horn gasket and applying a high-quality sealant. This can bring multiple benefits: effectively preventing water vapor intrusion, ensuring the airtightness of the back cavity of the speaker to avoid sound leakage, and enhancing the seismic stability of the installation structure.

The overall effect display after the horn gasket is installed.

The loudspeaker wiring has been completed, and the wiring is handled firmly and neatly.

All horn units are fastened and installed with hexagon socket screws, ensuring a firm and professional connection.

Close-up of the detailed effect of the mid-woofer unit after installation.

Renderings of the Biwei A 50 III tweeter after installation at the tweeter position of the original car.

 

Complete renderings of the cabinet modification specifically customized for the subwoofer. The design makes clever use of space and realizes the unity of effect and practicality.

This installation method does not affect any normal use space in the car at all, and at the same time, the bass effect is excellent: the low frequency is clear, clean and elastic, the dive depth is sufficient, the volume is full, and the low frequency details in the music can be accurately restored.

 

Two power amplifiers (Aiwei four-channel and zero-point two-channel) and a Biwei DSP processor are all hidden and installed in the space below the rear seats, which greatly saves the cabin area. The following is the specific installation details.

 

 

The wiring between all equipment rooms is completed by professional-grade terminal blocks, and welding is strictly avoided, which is one of the important standards to reflect the professional car audio modification process.

The installation and wiring of Aiwei’s top four-channel power amplifier have been fully completed.

The final effect of wiring and installation of zero bass dedicated power amplifier and Biwei DSP processor.

Panoramic renderings of the overall layout of the equipment under the rear seats after the modification is completed, with regular arrangement and orderly wiring.

The installation position of the main safety seat that supplies power to the entire sound system is displayed, which is a key link to ensure circuit safety.

 

After the successful completion of all hardware modification projects, it entered the crucial stage of professional audio debugging. Through precision instruments and the rich listening experience of technicians, it was carefully adjusted to ensure the best sound quality of the system.