The production principle and technology of water proof speaker

The production of fabric Waterproof Speakers including 3 parts: the production and assembly of the speaker box, the processing of the speaker unit and the processing of the grille.
One: the manufacture of the speaker box
Generally, the waterproof speakers are made of imported birch 18mm plywood. The advantages of choosing it are:
1. The hardness of the wood material is stronger and stronger, the density is higher and the workmanship is fine (there is no gap in the interlayer).
2. Many layers of sheets with unbalanced density are attached together, which will weaken the resonant frequency, resulting in a high-quality speaker, and the low-frequency bounce and high-frequency residual sound will be very helpful.
3. It has good waterproof performance, and it will not appear any abnormality if it is soaked in water for 10 days.

4. Very low thermal expansion and contraction ratio, no matter it is severe cold or heat, the coating on the surface of the box will not crack and fall off.

Then, by applying glass fiber reinforced plastic (epoxy resin + glass fiber), rain and snow can not erode the plate, and can effectively solve the inconsistency of the thermal expansion and contraction ratio between the plate and the paint, so that the paint may crack and fall off.

It is greatly reduced, so there will be no problems when using it in outdoor places.