Reshaping the acoustic genes of Audi A 4: the precision acoustic revolution brought by Japan’s Biwei DSP processor

As a strategic sub-brand launched by BEWITH, Japan’s top car audio brand, for a broader market, the “PLUG&PLAY” series has officially landed on the market with a variety of DSP processors and DSP power amplifier products with excellent performance and high cost performance. The launch of this product line aims to provide a set of people-friendly, efficient and easy-to-implement audio upgrade solutions for consumer car owners who have just come into contact with car audio modification, or who have a relatively limited budget but are also pursuing sound quality improvement, so that more users can experience the significant changes brought about by professional-grade audio processing technology.For audiophiles who are familiar with the Betway brand, the traditional impression of Betway is often closely linked to “high-end customization” and “precision inverted mold”. In order to achieve pure, accurate and infectious sound performance, its core products have extremely high requirements for the rigor of installation process, the accuracy of cabinet customization and the technical level of later debugging, which to a certain extent sets a higher entry threshold. Although the brand-new “PLUG&PLAY” brand shares the same roots as Biwei and inherits Biwei’s mature and excellent electroacoustic technology genes, its market positioning clearly points to the mid-range and entry-level markets. The brand takes “simplicity and convenience, high efficiency and ease of use, and high cost performance” as its core appeal, and its name “P&P” itself is a straightforward expression of the concept of “plug and play”, which is intended to lower the technical threshold and make the improvement of professional sound quality easier and accessible.

The Audi A 4 owner in this case has previously upgraded a sound system of quite good quality for his car. However, in the long-term use and listening, this car owner who has a great appreciation for music gradually felt that this system did not seem to fully release the full potential of its equipment, and there was still room for the fineness of the sound and the regularity of the sound field to be tapped. The core of the problem lies in the lack of a professional digital audio processor (DSP) to scientifically correct and optimize the acoustic environment of the whole vehicle. To this end, the car owner took the initiative to contact our “Music Broadband” modification shop, with the original intention of seeking professional tuning services. After our detailed communication and recommendation, the owner finally chose this P&P series DSP audio processor from the Biwei sub-brand as a key upgrade to open up the “two pulses of Ren and Du” of the system.

First of all, briefly sort out the original system architecture of the car owner: this is a passive sound division system, which is driven by a classic McIntosh 431 power amplifier at the same time by driving the speakers in the front and rear sound fields. In the advanced gameplay that pursues more extreme and flexible sound effects, upgrading the passive system to active sound division is the only way. Our plan is to make full use of the full potential of this Maijingtu four-channel power amplifier and change it to drive each unit of the two-way speaker in the front sound field (that is, the treble and mid-bass are driven by independent power amplifier channels respectively) to realize active sound division. Only in this way can the ultimate performance of each piece of equipment be brought into full play, and extremely diverse and refined control possibilities can be provided for future sound style adjustments.

The true appearance of the Biwei P&P DSP audio processor that is about to inject soul into the system:

Below, we will share with you the complete construction process and process details of this installation of Biwei DSP processor through a series of detailed pictures, and see how this professional equipment under the concept of “plug and play” is rigorously integrated into the audio system of Audi A 4.

The final renderings of the Biwei DSP audio processor after it is installed in the car. We place it in a reasonable and hidden location to ensure stability, safety and convenience for later maintenance and commissioning.

While upgrading the DSP processor, we also strengthened the power supply system of car owners. Since Maijingtu power amplifier is a typical “current demand type” design, its large dynamic performance is extremely dependent on abundant and stable power supply. The original car line may have become a bottleneck limiting its performance. Therefore, we upgraded the sound system with a dedicated power cord of higher spec. Every potential shortcoming of a perfect high-end sound system must be solved targeted under the insight and operation of a professional team in order to achieve true “no shortcomings” performance.

After all the hardware installation and line transformation are completed, the whole upgrade project ushered in the most critical and decisive link-professional tuning. The tuning work is directly related to what kind of auditory results all the early investment and efforts will eventually be transformed into. It can be called “soul surgery” in car audio modification, and its importance cannot be overemphasized.