[Installation of car audio unit] Subwoofer box is made like this!... I asked a professional

This special feature introduces the cost of the work, and the value of the professional, while clarifying how professionals are attached to car audio equipment.In the 7th time, we will consider the production of the "Subwoofer Box".

In addition, the special feature is covered by professional shops to produce articles.At this time, we talked to a long -established store in Kochi, Kochi, Kochi City, Kochi Prefecture.This time, I got a lot of helpful information.Please read carefully.

The “box” “box” production cost is about 40,000 to 100,000 yen!

If you want to execute the bass enhancement and want to get the sound you want, it is best to prepare your favorite unit subwoofer and play it with a one -off "subwoofer box".

The "subwoofer box" can be roughly classified into two types.One is a “box -rated type” that is installed in a trunk or the like, and the other is an implant type embedded on a trunk floor.First of all, Mr. Yoshioka, the representative of "Garage Showei", taught me from the production cost of the "box -rated type" "subwoofer box".

"The cost of producing the“ subwoofer box ”of our“ box -ranging type ”is about 40,000 yen to 100,000 yen (excluding tax). The main points that change production costs are not reinforced inside.Or,.

Regarding reinforcements, basically, there is no intermediate way.In other words, it is these two choices whether to add or not.If you put it in, it will be executed in the best way.

By the way, the production method of the "subwoofer box" is published on YouTube, so if you are interested, please check it out.YouTube's CH name is "M & M Design".

To put it in a quick explanation, the production procedure is as follows.Design, cut out boards, assembled.Then, put the reinforced material on the way, and when the assembly is over, wrap the fabric to finish.We often use 18mm thick MDFs for plate materials.On the other hand, the fabric will be decided according to the customer's preference.Carpets and leather are often selected.And the reinforcement material is made of 2x4 (two -by -four) square material (a rectangular cross section).This will be put on each side as a "beam" or in the space. "

The points for producing the “subwoofer box” are “capacity” and “strength”!

Next, I was told the points in production.

"There are two main points. The first point is" capacity ". In our shop, we want to make it as large as possible. If you secure the" capacity ", the rehabilitation range on the low -frequency side side is made.You don't have to sacrifice.

This is because the lower the capacity, the easier it is to produce tight bass, but on the other hand, the regenerated frequency on the low frequency side increases.Each unit has a determined “F0 (Ephzero, minimum co -amal frequency)”, and the lower sound is basically not sounded.And "F0" goes up as the "capacity" of the box is reduced.

In our shop, we want to maximize the ability of the "subwoofer unit" to be used.So we secure as much "capacity" as much as possible and keep the "F0" rise.

And the second point is "strength".If the "strength" is not enough, the box will be "boxed".Because the board vibrates.If it is a fine vibration, it will not be as strange as it can be heard in the ear, but if there is even a little strange noise, the sound released from the subwoofer will be quite cloudy.As a result, S/N falls.However, if you apply "reinforcement" thoroughly, you can almost eliminate the boxing of the box, so you can get a clear sound.

The larger the "capacity", the more the need for reinforcement increases.As the box is wide, it is easier to resonate.In that sense, it is advantageous to make it smaller, but in our shop, we aim to balance "capacity" and "strength" without taking that option. "

The “embedded type” increases work difficulty and cost.But cospa is expensive!?

Next, I was told about the “embedded type”.

"The" embedded type "has a significant difficulty of the work. As a result, the work time is long. The" boxed type "can be completed in about two days, but the" embedded type "takes 5 days.There are many cases where amp -racks are also made together, so it takes that much time, but the production process of the box itself will definitely be complicated. The trouble will clearly increase.

The estimated production cost is about 120,000 yen to 200,000 yen (excluding tax).However, from the time of work (required time), I think it is rather reasonable.

In addition, the points to be emphasized do not change in the production of the “embedded type”.We will promote the production with a major premise to secure these two, "capacity" and "strength".

In production, start by giving a level.In other words, this is important, and the difficulty is high.And it is not easy to secure "capacity".Since the bottom of the trunk is not flat, it follows the unevenness and adjusts the shape to secure the "capacity", but depending on the shape, there may be parts that do not function as a capacity.We also pay close attention to determining there.

The structure is specifically explained:Use MDFs on the side and top plate, and the side and bottom are molded with FRP.The work of molding with the FRP is repeated many times, and the thickness and "strength" are given.The know -how of the “embedded type” is also available on YouTube, so please take a look.

If you come to the store, we will explain in more detail.In addition, please let us know what to do with system -up.If you are near you, please feel free to come.We look forward to"