Waterproof acoustics are often used in outdoor large-scale performances, outdoor stadiums, parks, school playgrounds and other outdoor sound fields. These acoustics are waterproof and can withstand the severe test of outdoor wind and rain. The speaker is an important sound generating part in the waterproof sound system. Water has a great impact on the speaker. Once water enters the speaker, the speaker is likely to lose its function. If the speaker is tested with IP67 waterproof grade, it can protect the speaker from rain.