Production of bamboo tube speakers, Bamboo Speaker
Keywords: production of bamboo tube speakers
Bamboo tube production
The bamboo speakers made in this chapter are based on the horn, while designing the principle of bamboo musical instruments. Doing the box with bamboo tube, not only is convenient, low cost, and the tool is simple, and the production process is easier.
First, the power and size of the speaker: I use a bamboo tube with a diameter of 152mm, a length of 348mm, and select 5 inches, the maximum power 100W bass horn, and design to create a pair of main speakers, dispense with a singular amplifier, and listen to the effect. Wooden Fidek speakers made in professional manufacturing. In addition, different types of small bamboo tube speakers are produced according to different needs, such as listening, multimedia and other two-channel connecting speakers, the effect is good.
Second, the choice of bamboo tube is fixed: I am based on the diameter of the speaker. It can also be selected according to the bamboo tube diameter, as long as the inner diameter of the bamboo tube is equal to or greater than the horn diameter. The "U" type (i.e., the bamboo festival is naturally closed) bamboo tube, the speaker is installed on the other, which is easy to make a mono joker. The bamboo tube (i.e., the bamboo festival in the middle) is selected to make a two-channel connecting speaker, and the speaker is mounted on both ends of the bamboo tube, and the intermediate is naturally isolated. When the "U" bamboo tube is obtained, the bamboo will prolong 100 mm outside of the bamboo, and the effect is to increase the length of the box and increase the weight of the cabinet. Regarding the fixing problem of the speaker, if the diameter of the bamboo tube is less than the speaker diameter, the inner wall of the bamboo tube can be removed to the speaker. If the diameter of the bamboo tube is larger than the speaker diameter, the speaker is fixed to the bamboo tube with hot melt glue. If the outer diameter of the bamboo tube is equal to the speaker diameter, the horn is fixed to the top of the bamboo tube with a screw.
Figure 1 is a schematic illustration of a single speaker. Figure 2 is a schematic diagram of a two-channel connecting speaker.
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Third, inverted phase holes and brackets: The inverted phase of the bamboo tube is different from other speakers. According to the experiment, if there is a different hole in the different positions of the bamboo speaker, the sound effect is significantly changed, and the bamboo tube speaker produced is inverted by this. After multi-experiment, the position and size of the inverted hole is: from the tail of the active case, equal to the position of the bamboo tube diameter, which is equal to the long square hole having half the bamboo tube radius, which can reach inverted. The stent is used to support the foot of the speaker, take the diameter of the speaker, and the length of the bamboo tube is 150mm shorter than the speaker, which is half a half, with half of the back to back to the speaker side, and the height and angle of the stent can be made as needed.
Fourth, the sound absorbing material and the box are aggravated: the problem of sound absorbing objects and casings in the speaker, the sound absorbing material (such as sponge) is installed in the effective box, and the number is adjusted according to the actual auditory, the bamboo tube speaker is small, light weight. It is easy to vibrate, and the speaker is located at one end of the bamboo tube, the overall weight is unbalanced, and the method is to be appropriately aggressive, and the method is to incorporate asphalt and stone in the tail extension of the speaker. For a two-channel congoing speaker, the "bottom" of the left and right speakers is performed, and the weight is determined as needed. After making it, brush two clear lacquers, making the surface more smooth.
Since the bamboo tube speaker has the above characteristics, especially the position of the inverted hole hole, the design size, and the adjustment of the sound absorbing material can effectively change the sound effect, as long as these "parameters" are adjusted, it can achieve the best.
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