Speaker malfunction analysis

Main products: ceiling speakers, lawn speaker, abk radio, public broadcasting, broadcasting equipment <br> <br> speaker problems can be caused by the following reasons:

1, long-term overload drive horn, the horn will be burned because of overheating the horn, because the temperature of the coil rises, so that some structural parts are melted, cracked or burned, the temperature of the coil under normal use has 180 degrees Celsius, not It can be imagined under normal use!

2, mechanical failure, overloaded drive horn makes the paper tray moves out of range and separated from the coil, or the coil and coil seat separation, the tray flange or horn support ring is torn, any of the above situations, once occurred, are You can make the horn malfunction. When the hemming or the support ring is torn, the coils will rub against them because the tray assembly can no longer be properly suspended in the center position. A small crack may not be felt at first, but after a while, when the cracks become larger At that time, the horn will be broken.

3, the speaker's failure may also be a combination of the above two methods, such as the power amplifier suddenly outputs a large momentary energy, this energy can be a sudden burst of sound, the horn will have a strong vibration, making the coil out of the magnetic gap When it goes back, it may not be able to return to its original position due to an eccentric error. This will cause the entire mechanical movement to be brought forward by the paper tray and deviate from the original position. As a result, the paper tray can no longer produce a sound, but the energy continues to be transmitted. On the horn coil, the coil doubles away from the magnetic gap, because the magnetic gap is the best heat dissipation environment for the coil, but the coil has left the magnetic gap. When the coil continues to receive the signal from the amplifier, the coil will quickly heat up and cause the burned coil. .

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