Cause of Horn iron mesh cover?
The material of the headphone speaker
The frame of the headphone speaker is the mother body for installing vibration parts, magnetic circuits and other parts. The bracket can be divided into steel plate and plastic according to the material. The steel plate is made of SPCC steel plate with a thickness of 0.3~1.2MM and is stamped and formed. The surface is usually treated with colorful electroplating, electric black, and anti-rust. Plastic materials are mostly ABS or ABS plus fiber to increase heat resistance and strength, PBT, etc.
Second, the reason for the speaker failure?
If the speaker is overloaded for a long time, the speaker will overheat and burn out the speaker. Because the coil temperature rises, some parts of the structure will melt, break or burn out. The normal use coil temperature is 180 degrees Celsius.
Mechanical failure, overloading the horn so that the cardboard moves out of range and separates from the coil, or the coil separates from the coil holder, folding of the disc, or tearing of the horn support ring, can all render the horn ineffective. When the hem or support loops are torn, the coils will rub against them because the cardboard assembly won't hang properly in the center. Small cracks may not be felt at first, but over time, the cracks get bigger and the horn can crack.
If the power amplifier outputs a large moment of sudden energy, the energy can suddenly turn on the sound, and the speaker will vibrate strongly, causing the magnetic gap of the coil, and when it returns to the eccentric error, it may not be able to return to the original position, so that the whole machine's movement machine Made of paper plates, carry-overs that deviate from their original stop position. As a result, the paper disc was unable to emit sound, but energy continued to be transmitted on the horn's coils. The coil has left the magnetic gap, because the magnetic gap is the best cooling environment for the coil.
