Professional audio systems often use the following two methods for
waterproofing:
1. Wrap all the outer surface of the box with FRP, wait until the FRP is
dry, and then polish and spray paint. Generally, you need to spray paint 3-4
times, so that the box can not only achieve waterproof performance, but also
retain the original surface.
2. Another more advanced waterproof treatment is to repeatedly apply
waterproof plastic grease paint on the plywood of the box body, so that the
waterproof paint can penetrate into the plywood of the box body, which can
increase the tightness of the box body. There is a deeper protection for the
cabinet. After the cabinet body paint is completely air-dried, polishing and
spray painting are carried out, and the surface of the original speaker is also
retained. Speaker waterproofing also has a certain degree of technicality. It is
not a simple application of waterproof glue. After ordinary glue is applied, it
will affect the damping of the speaker, thereby affecting the sound quality of
the speaker. Special glue must be used to evenly distribute the speaker cones
and front panel grille. The outer layer of stainless steel should be covered
with several layers of anti-rust paint, and the inner layer of the mesh cover
should be covered with a sound-permeable sponge to prevent long-term rain, dust,
etc. soaking and rot. The speaker plug and socket adopt professional waterproof
speaker plug accessories.
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