Ten tips for making speakers

How can you make a set of speakers that you are content with? This article introduces ten tips

Tip one: Select the appropriate unit caliber of the speaker unit to understand the technical parameters of the unit. It is best if the unit has been "paired" by the manufacturer to ensure consistent performance.

Secret two: Use medium density board (MDF) or high-density high-quality logs for speaker materials, or use granite or concrete to make the cabinet. The thickness of the plate is about 15mm ~ 25mm. If there is no suitable thickness, it can also be made of double-layer material.

Secret three: The principle of making the cabinet is that the internal volume (net volume) is the same as the design value. The design value is calculated for the specific speaker unit by applying relevant formulas. The ratio of length, width and height of the cabinet can not be an integer multiple, and the aesthetics of the shape must be taken into account. Therefore, when considering the installation of asphalt board or asphalt, the volume occupied by it should be deducted.

Tip four: The basic requirements of the box body are to be sealed and firm, so it is required that the joints on all sides should be neat during production, no glue leakage, and nails should be added. If the joint is made into a wedge-shaped bayonet, it should be glued and nailed to make it stronger and stronger. On the side and front panels, strong ribs (such as 30mm × 40mm hard wood strips) should also be used for reinforcement.

Tip 5: When filling the suction box cotton, wool and sponge can be used for the closed box design; the inverted box can use a sponge with a thickness of about 25mm to fill the entire inner surface and be properly fixed.

Tip six: When installing the crossover, if you use asphalt board or asphalt, you can directly use the screws to fix it. Otherwise, soft insulation pads should be used between the cabinet frequency dividers to maintain proper tightness to prevent vibration coupling with the cabinet, thereby reducing interference. The connecting wire in the box should be made of high-quality oxygen-free copper wire, keep the appropriate length and try to fix it to prevent it from swinging greatly.

Tip 7: It is best to dig deep holes to install the speaker unit, and use rubber washers to isolate the transmission of harmful vibration. When fixing the unit and the junction box with self-tapping screws, the pre-holes should be punched in the box with an electric hand drill. The pre-holes are slightly smaller than the screws, so that the installation is easy and beautiful.

Tip eight: pay attention to the "+" and "-" marks of the unit and the crossover when wiring, and connect according to the positive and negative connection methods. When soldering, it is best to use high-quality silver-containing tin, and no virtual soldering or desoldering can occur.

Tip 9: The surface of the cabinet can be treated with real wood veneer or PVC plastic veneer, or it can be painted. The color depends on personal preference. The requirements for the veneer are: tight without bubbles, smooth without wrinkles.

Tip 10: It is best to use "two-line crossover". At this time, the shorting piece of the four-terminal junction box should be removed, and the left and right channels of the amplifier are connected with two wires corresponding to the "+" and "-" polarities, which is commonly known as the "Bi-Wire wiring method". "Two-line crossover" can greatly reduce the crosstalk of bass to treble, and its effect is significantly better than the traditional single-line connection method. In short, the production of the speaker is a relatively meticulous and complicated process, and we must not rush to achieve success.

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