Exploring the origin of sound: Toyota Reiz Audio upgrades its Aiwei system to interpret the pure charm of two-way speakers

Every car audio enthusiast has unique insights and expectations for system upgrades, which constitute the diverse charm of modification culture. For example, some people firmly believe that the three-way system has more advantages in theoretical frequency band coverage, while other senior “hardcore” players always prefer the integrated nature and coordination of the two-way system. There is no absolute right or wrong here. The core lies in the fact that every listener is pursuing the sound aesthetics that resonates with his own heart and is most in line with him. At the same time, with the rapid progress of electronic technology, innovative products in the audio field are emerging one after another, and every technological breakthrough may open a door to a new listening experience for us.

 

Just like the currently highly respected AVI car audio system, its popularity is backed by solid technical support. Take the Aiwei KING series two-way speaker unit as an example. Its tweeter boldly adopts a rare large-diameter 3.3-inch design. The subtlety of this design is that it greatly broadens the frequency response coverage of the high-frequency unit, allowing it to fully extend to the key frequency bands that the traditional midrange unit is responsible for. This brings two core advantages: First, it completely eliminates the “faults” or “depressions” that may exist at the junction between treble and mid-bass in the traditional two-way system, making the frequency band transition smooth and silky; Secondly, covering a wider frequency band by a single unit can create an excellent listening experience with higher sound density, more uniform timbre, and more realistic and natural music restoration. This is the characteristic favored by many enthusiasts who pursue overall balance.

Below we will present the practice of this concept in detail through a case of audio upgrade of a Toyota Reiz. Based on the owner’s desire to optimize the budget, when planning the new system, we fully evaluated and retained the subwoofer system part of its original modification. By accurately investing the budget in the front sound field speakers, power amplifiers, wires and a cost-effective second-hand host, we have built a set of efficient and personalized upgrades. Next, let’s walk into the details of this modification.

A list of the core system configurations used in this upgrade.

The front soundfield horn is driven by Aiwei’s top KING series four-channel power amplifier. This amplifier is distinguished by its extremely balanced sound output and round and full timbre. Its interior uses carefully selected audiophile-grade electronic components, and combined with the circuit design that simplifies complexity and pays attention to signal path optimization, it jointly creates an excellent listening experience advantage of deep and quiet sound background, wide and grand sound field, and rich reproduction of details.

Construction first begins with the door panels. The picture shows that before the midwoofer unit is installed, the special waterproof horn gasket is firmly in place, providing a stable and sealed working environment for the speaker.

All horn wires are selected from Barney (brand) classic blue series wires. This wire is famous for its excellent conductor purity and insulating medium, which can effectively convey warm and soft timbre characteristics, making the overall listening experience richer and more durable.

Detailed effect after the midwoofer unit is installed. The installation is stable, the wiring is standardized, and the sealing treatment is in place, laying a solid foundation for the best sound quality performance.

The mounting cup cover tailored for the tweeter unit can not only accurately fix the pointing angle of the unit, but also effectively improve the cohesion and sound density of high frequencies through its internal cavity design.

For the audio source part, a Kenwood second-hand digital player with good color is selected, which provides reliable audio source quality within the budget.

The visual effect after the overall modification is completed, neat and professional.

The manufacturing process of power amplifier terminal blocks is an important symbol of professional modification. In order to avoid slight deterioration of conductor crystal structure and sound quality caused by high-temperature welding, we always insist on using high-quality special crimping terminals for processing, which is the correct way to ensure lossless signal transmission and long-term stability.

Aiwei’s top four-channel power amplifier is hidden and installed under the passenger seat, which not only saves space, but also facilitates heat dissipation and maintenance.

Make full use of the original investment of the owner, and a professional bass amplifier of the American Phoenix Gold brand has been retained, which continues to provide strong power for the subwoofer system.

In order to ensure the electricity safety and abundant energy supply of the whole upgraded system, we reinstalled the main safety of the system, and upgraded the previous power cord of the car owner to a professional power cord with thicker wire diameter and stronger current passing capacity. More importantly, when the power cord passes through the body firewall, we have done careful sealing and protection treatment to ensure that there will never be any abnormal noise or potential safety hazards.

Final effect comments: After careful installation and preliminary debugging, this system has shown a gratifying sound style. The overall listening feeling is atmospheric and open, and the dynamic performance is leisurely; The rhythm of music interpretation is clear, and the levels of each frequency band are clearly identifiable; Especially in the vocal performance, it shows a rare sense of density and real granular texture, which is infectious. We believe that if car owners consider upgrading high-end tuning centers such as BEWITH DSP audio processors in the future, the potential of the system will be further tapped, and the accuracy, stage sense and emotional presentation of sound are expected to reach a more perfect state.