Three points should be noted in the design of PA loudspeaker bracket.
1. The flatness
The seams of web, spring and frame must be flat and tight to ensure safety. When the roller paper is concave, it is also necessary to consider whether the roller paper is in contact with the frame surface when working.
2. Highly configured
Combine the effective height of web paper and three point connection, design or choose the appropriate iron frame. There should be a little gap between web paper and elastic wave, generally 0.3-0.8mm is appropriate.
If the glue is separated by the outside, the sound cannot be well connected, which will seriously lead to many adverse conditions, such as drum pressure, different height of the tire body, elastic wave sinking, and increased probability of adverse sound. In addition to the wave
For the height of the bottom and internal space, for the high power, large amplitude of the horn speakers, if the height is not enough, the elastic wave neck will touch the iron sheet or riveted embossed point.
3. Heat dissipation design
When the PA loudspeaker is working, the household sound "generates high heat. The hot air is concentrated in the cavity below the bomb. If there is not enough internal space between the bottom of the iron frame and the bomb, the heat buildup cannot be spread.
This will increase the aging speed of the voice coil, resulting in power unreachable, so consider the design, you can increase the bottom space of the iron frame appropriately, or you can design the bottom edge of the iron frame with holes.
If it is a plastic frame, the excessive temperature generated by the iron sheet will make the plastic soften and deform, resulting in "undesirable products" using heat insulation material, or adding heat insulation material between the iron sheet and the plastic frame.
