Use environment: outdoor large-scale performance, square music fountain system, open-air stadium, park, school playground sports field sound reinforcement. Part 1: Box manufacturing TPA Tebao audio all-weather waterproof speaker adopts imported birch 18mm splint, which has the following advantages: In the processing of the box, our factory divides it into 8 processes: (4) Grinding; apply the glass fiber reinforced plastic, etc., and then sand it once. (5) spray primer; (6) sanding; (7) spray paint; (8) Spray wear-resisting point, which can resist wind and sand erosion and keep the surface process smooth and beautiful. TPA Tebao audio outdoor all-weather speakers are equipped with Italian B&C speaker units. The world's top speakers (such as: Martian, EAW, etc.) are all custom-made units in the factory. Their excellent sound quality and durability are unquestionable. Part III: Net cover processing The net cover is equipped with a layer of 8cm thick speaker sponge (ventilated, breathable, which has no effect on sound pressure and sound quality), which can prevent the unit from being directly exposed to the sun, the rain and snow, and the abrasion caused by the sand.
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Guangzhou Techeng Audio Co., Ltd. has patented technology for all-weather waterproof speaker. Most of the domestic all-weather music fountain loudspeakers are from the TPA audio factory.
The production of all-weather outdoor waterproof speakers, including cabinet manufacturing, unit processing and net cover processing.
1. Hard wood, high density, fine workmanship (no gap in the interlayer)
2, after the multi-layer sheet is bonded, the density is not uniform and the resonance frequency is lowered, the quality of the speaker is high, and the low-frequency bounce and the high-frequency residual rhyme are better.
3, with excellent waterproof ability, soaked in water for ten days without any abnormality
4, very low thermal expansion and contraction ratio, no matter whether it is severe cold or cool summer, the surface coating of the box will not crack and fall off. 
(1) Surface soft putty treatment. Fine and soft atomic ash can ensure that the speaker paint is not easy to fall off when it is bumped; (2) Grinding, making the surface smooth and beautiful and easy to carry out the next process;
(3) Applying FRP (epoxy resin + glass fiber), so that rain and snow can not erode to the plate, and can effectively solve the problem of inconsistent thermal expansion and contraction ratio between the plate and the paint, further reducing the possibility of cracking and falling off of the paint; The use of outdoor music fountains is completely unproblematic. 
Part II: Unit Processing
The speaker paper trays are made of imported waterproof rubber for strict waterproof treatment, without any gaps. The treated unit can perform high sound pressure sound reinforcement while being exposed to rain, and does not have any influence on sound quality. 
TPA (Trea) audio all-weather outdoor waterproof speaker use examples: 
