Square dance speakers can shock upstairs

General soundproofing of residential buildings is not too good, if the speakers in the indoor volume, will certainly affect the upstairs,

National indoor noise standards are residential, commercial, industrial mixed areas, 60dB daytime, 50dB night,

National standard provisions of the maximum sound pressure level of the first level of the standard of the theater 106db,

And the square dance speakers can reach up to 130 - 140dB, you can imagine what will happen. 140db, can imagine what it will be,

So, in the indoor music must take into account the ability to tolerate the left and right neighbors.

For reference