24 Asia Dragon audio systems’ traceless remodeling ‘| Breaking the industry information gap, one set of solutions simultaneously achieve sound quality leaps, zero space occupation and high budget returns!

Modified vehicle: 2024 Toyota Avalon

Core demands of modification: Cost-effective investment, complete lossless installation, significant sound quality improvement

The owner of the car is an audio enthusiast who has strict requirements for sound quality. Several audio modifications he has experienced before have failed to achieve his expected listening effect. In this upgrade consultation, he clearly put forward three core requirements that must be met at the same time, which is not only a test of our professional ability, but also reflects the rational cognition of mature consumers on car audio modification:

The primary appeal isPrecise balance between sound quality and budget。 Car owners expect a clear and discernible jump in sound quality, refuse to scratch the surface, and at the same time require the overall solution to have excellent cost performance to ensure that every investment can be translated into tangible auditory returns.

The second rigid requirement isAbsolute non-destructive installation standard。 The owner of the car has the ultimate pursuit of the original factory integrity and interior aesthetics of the vehicle, insisting that all modifications must be based on the original vehicle structure. Any form of wire exposure, interior panel cutting or permanent modification is strictly prohibited, and the final effect must achieve “zero identification by the naked eye” “invisible upgrade.

The third key condition isComplete preservation of spatial practicality。 As a car that combines business and family travel, the loading function of the trunk cannot be compromised. The owner particularly emphasized that the installation of any audio equipment must not encroach on the main storage area of the trunk, and the normal storage of daily large items (such as golf bags, suitcases, etc.) must be ensured.

Faced with this set of clear and stringent requirements, we see it as an excellent opportunity to demonstrate our systematic solution design capabilities. We have planned and implemented a highly customized set of“Stealth Acoustic Enhancement System”。 The essence of this solution is that all audio components are installed in a hidden integration, which is perfectly integrated with the original car interior environment at the visual level; At the auditory level, through scientific equipment architecture and professional sound field adjustment, an essential leap in sound quality performance is achieved, achieving“Traceless appearance, innovative sound field”The ultimate goal of.

In-depth analysis of system architecture

Front sound stage main system: Choose JapanPHASS P 170 EA two-way speaker set。 This series of speakers are well-known in the industry for their excellent resolution, delicate mid-frequency vocal reproduction and excellent full-band balance. Among them, the frequency performance is full and emotional, which can accurately restore the singer’s voice characteristics and singing details; The high-frequency extension is natural and smooth, providing sufficient air feeling without being harsh; The medium and low frequencies are solid and stable, laying a solid foundation for the overall sound effect. Its timbre characteristics are especially good at performing pop music, jazz and vocal works. In terms of installation, we strictly follow the size specifications and interface definitions of the original car speaker position to achieve true in-situ lossless replacement.

Rear sound field assist system: matchMorel two-way speaker setAs a backcourt complement. The main function of the rear sound field is to create a surround feeling and spatial atmosphere, assist the front sound field to improve the overall sound image, and provide a high-quality listening experience for rear passengers. The Magic Cube speaker is famous for its balanced and warm timbre, high sensitivity and good compatibility. It can smoothly connect with the front sound field to build a coherent and unified sound field in the car.

Centre channel enhancement scheme: Special addition of oneQC aluminum alloy box midrange unit, and cleverly hide it and install it in the decorative panel position reserved by the original factory on the center console. In the standard door two-way system, due to the physical limitation of the installation position, the vocal image is often low and not cohesive enough. This independent center speaker is designed to solve this acoustic shortcoming. It can effectively bridge the medium and low frequencies and high frequencies of the front sound field, accurately position the sound images of the lead singer and core instruments in the central area of the instrument panel, significantly improve the focus, three-dimensional sense and stage depth of the sound field, and make the driver’s “emperor’s position” The listening experience is more realistic and on-the-spot. (Technical note: In three-way systems equipped with independent midrange units, there is usually no need to install additional midrange units to avoid band overlap and phase interference.)

Ultra-low frequency reconstruction system: In order to completely solve the problems of insufficient low-frequency submergence and lack of volume of the original car audio, we introduced the AmericanRockford Fosgate R 2 Series 10-inch Subwoofer。 This subwoofer is highly regarded for its deep low-frequency extension, clean transient response, and bouncy texture. In order to abide by the principle of “not occupying practical space”, we carefully placed it on the innermost side of the trunk, close to the center of the back of the rear seats. This position not only maximizes the lateral space and ensures that the areas on both sides of the trunk can be fully used for loading large items, but its forward radiation direction is more conducive to the efficient transmission of low-frequency energy into the passenger compartment, improving sound energy efficiency.

Dedicated power drive system: In order to ensure that the subwoofer receives sufficient and well-controlled drive, we equipped it with GermanBlaupunkt single-channel high power amplifier。 This power amplifier is specially optimized for driving subwoofer, providing continuous and stable high-current output, ensuring that the low-frequency performance has both shocking impact, clear hierarchy and excellent transient speed.

Core technical highlights of this modification

Concealed non-destructive installation process of whole system
This is the engineering basis for realizing the “zero visual change” requirement of car owners. From door panel speakers and center units to trunk subwoofers and hidden power amplifiers, all wires are laid using the original car wiring harness channel or carefully designed hidden paths; All equipment is installed using the original vehicle screw hole or non-invasive fixing method. After completion, the interior of the vehicle can be completely restored to its original factory state, and even after close inspection, it is almost impossible to find any modification traces.

Application of “center sound field focusing” technology for two-way frequency system
Far from simply adding a speaker, this move is a systematic tuning project based on physical acoustics. Through the high-precision DSP digital audio processor, the center channel is independently fine-tuned for delay, phase and EQ balance, so that it can achieve perfect coordination in time and frequency with the main speaker of the front sound field, and the sound image is successfully raised from the door position to the front, thus realizing the precise positioning and broadening of the sound field beyond the conventional two-way system, which is a key technical link to improve subjective listening satisfaction.

Exquisite balance design of spatial practicality and high-end sound quality
The layout strategy of “subwoofer rear integration + power amplifier hidden” is the core of the space design of this scheme. Through acoustic simulation and field measurement, we determined the “golden installation point” in the trunk that has the least impact on storage function and the highest acoustic coupling efficiency. With the complete concealment of the power amplifier (usually located at the bottom of the seat or in the spare tire slot space), the final result is achievedSound quality performance is improved by more than 50%, while conventional storage space occupancy is almost zeroThe excellent results perfectly respond to car owners’ concerns about practicality.

Objective presentation of sound quality effects
We are often asked, “Why do the recordings in your case sound so real and moving?” The core of the answer lies not in the expensive recording equipmentThe sound quality of the live restoration itself has reached a high standard. Only when the live is really improved will the recorded sound be good enough。 This modification case of Toyota Asia Dragon is another successful practice of this concept.