Power amplifier speakers are usually caused by excessive or unstable output of the power amplifier. When the output current of the amplifier is too large, the coil of the horn will be affected by too much current, causing the coil to overheat and burn. In addition, when the output signal of the power amplifier is unstable, the speaker is also vulnerable to damage. In order to prevent the power amplifier from burning the speaker, you can pay attention to the reasonable setting of the power amplifier volume, and choose the appropriate horn power. In addition, the use of reliable quality amplifier and horn, as well as maintaining the normal working state of the horn are also important measures.
This reason is that the input voltage and impedance of the impedance converter do not match the output of the constant voltage amplifier, causing the input horn voltage to be too high.
The most reasonable way is to choose a suitable impedance converter. Other methods can not achieve the best match between the speaker and the amplifier and the best working state.
Due to the high output voltage, the power amplifier is suitable for long-distance transmission of audio signals, and is widely used in the system with a large number of speakers. Such as fire broadcast system, building background broadcast system.
The output current of the power amplifier is too large, directly exceeding the maximum acceptable current of the horn, which will cause the horn to burn.