Car audio modification useful information sharing: Japan Biwei audio door panel box modification process

If you want to enjoy the shocking effect similar to a concert or home theater in the limited space of the car, you must first meet many conditions. The most basic thing is that the speaker unit needs an independent box to play space, because the internal structure of the car door panel is irregular, and it can even be described as riddled with holes. In this case, an independent box is needed to effectively reduce the sound loss caused by resonance.

At present, the Japanese Biwei speaker in the car audio modification market has developed a speaker unit that requires an independent cabinet to solve this difficulty. Moreover, the biggest advantage of this speaker is that its sound has off-axis directivity, which means that the sound is only emitted in one direction. This benefit can better reflect that the sound loss is reduced to the lowest level!

However, professional car audio equipment has very strict requirements for modification technology! First of all, the volume of the loudspeaker demand box and the data of the diversion pipe are all officially required, and they are not boxes made out of thin air and randomly made from personal experience. To sum up, we can draw a conclusion: no matter what model the Biwei car audio system is modified to, its effect is the same, regardless of the model!

The following Nissan Patrol off-road vehicle is taken as a case. As long as we share the production process and method of door panel box, it is for reference only.

1. Main modification tools / Consumables: CNC engraving machine; Imported birch multi-layer board; Puzzle special white glue;

Second, plan and design the approximate position and shape of the box on the door panel. It is necessary to adjust the internal sheet metal structure of the door, and not excessively damage the stress position of the sheet metal of the door.

After the box board is cut, a series of assembly begins. Try not to use cheap “white latex” when assembling, because once this glue dries completely, it will be hollowed out inside, which will directly affect the quality and effect. Choose special wooden board panel glue.

 

Original door panel trim begins to disassemble 。

The box diversion pipe is manufactured

Outer layer waterproof and anti-corrosion coating treatment 。

 

Start installation on designated location 。

Box panel polishing 。

The panel is finished with baking paint.

Door panel interior modification completed , the masters are assembling.

 

Finally install the fabricated panel 。