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Pacific Security Network News ]
The horn failure of the amplifier may be caused by the following reasons:
1. When the horn is overloaded for a long time, the horn will burn out the horn due to overheating. Because the temperature of the coil rises, some structural parts will melt, rupture or burn. The temperature of the coil under normal use will be 180 degrees Celsius. It can be imagined under normal use!
2, mechanical failure, overloaded drive horn makes the paper tray move out of range and separate from the coil, or the coil and coil seat are separated, the paper tray hem or the horn support ring is torn, any of the above situations occur, The horn can be malfunctioned. When the hem or support ring is torn, the coil will rub against them, because the tray assembly is not properly suspended in the center position, a small rupture may not begin to feel at first, but after a while, when the crack becomes larger When the horn is going to follow, it will be broken.
3. The fault of the horn may also be a combination of the above two methods. For example, the power amplifier suddenly outputs a large instantaneous energy. This energy can be a sudden opening of the sound, and the horn will have a strong vibration, so that the coil is separated from the magnetic gap. When it goes back, it may not be able to return to the original position if it is eccentric. This will cause the whole mechanical action to be carried forward by the paper tray, deviating from the original position of staying. As a result, the paper tray can no longer emit sound, but the energy continues to be transmitted. On the coil of the horn, the coil double leaves the magnetic gap, because the magnetic gap is the best heat dissipation environment of the coil, but the coil has left the magnetic gap, then when the coil continues to receive the signal from the power amplifier, the coil will quickly heat up and cause the coil to burn out. .
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