使用的时间长了会有噪音，那就会很影响音响的效果，所以一旦出现这种情况就需要赶紧的进行处理，那么报告厅音响出现噪音有什么处理妙招吗？
There will be noise in the use of lecture hall sound for a long time, which will affect the effect of sound, so once this situation occurs, it is necessary to deal with it quickly, so what is the magic trick in dealing with the noise of lecture hall sound?
将音量电位器的音量调到，即没有声音（在无声源的情况下）。此时，扬声器应该没有声音。如果有嗡嗡声，是功放功率整流部分滤波电路中的电解电容变化、故障或容量变化。它太小了；如果功放开的声音很大，有很大的嗡嗡声，这是功放的音频输入屏蔽不好造成的，检查并排除屏蔽故障。
Set the volume of the volume potentiometer to the lowest level, i.e. no sound （in the case of a silent source）。 At this point, the speaker should be silent. If there is a buzz, it is a change in electrolytic capacitance, a fault or a change in capacity in the filter circuit in the power rectifier part of the amplifier. It's too small; If the sound of power release is very big, there is a great buzz, which is caused by the audio input shielding of the power amplifier, check and eliminate the shielding fault.
每个原装的外壳必须接地，尤其是音频输入线必须屏蔽，护套线必须准备好并接地。喇叭发出嘶嘶声。这种情况多为整体屏蔽不良，或电源变压器的初级和次级绕组隔离不好造成的，隔离层应接地。
Each original housing must be grounded, in particular the audio input wire must be shielded, and the sheath wire must be ready and grounded. The loudspeaker hissed. This situation is mainly caused by poor overall shielding, or poor isolation of the primary and secondary winding of the power transformer, and the isolation layer should be connected to the ground.
转动电源插头可以减少&濒诲辩耻辞;嘶嘶&谤诲辩耻辞;的声音。如果还是不行，在电源输入端（变压器的电源输入端）串联两个工作电压为250痴的4700笔电容，中心抽头接地。有些元件有虚焊，稍有震动就容易产生噪音。您可以用筷子将每个原件一个一个地敲击以检查。
Turning the plug reduces the hiss. If this still fails, connect two 4700P capacitors working at 250V in series at the power input （the power input of the transformer）， with the center tap grounded. Some components have virtual welding, a little vibration is easy to produce noise. You can check each element by tapping it one by one with chopsticks.
报告厅音响出现噪音有什么处理妙招吗？以上所讲解的内容大家可以借鉴，但是要注意的是，应该是根据自己音响的实际情况来做处理，如果还有问题的话欢迎来此咨询。
Is there any clever way to deal with the noise of lecture hall acoustics? The content of the above explanation can be used for reference, but it should be noted that it should be handled according to the actual situation of their own sound, if there are problems, welcome to this www.wenguangzhineng.com consultation.
