更新時(shí)間：2022-04-04
文章來(lái)源：http://m.74seba.com/
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報(bào)告廳音響使用的時(shí)間長(zhǎng)了會(huì)有噪音，那就會(huì)很影響音響的效果，所以一旦出現(xiàn)這種情況就需要趕緊的進(jìn)行處理，那么報(bào)告廳音響出現(xiàn)噪音有什么處理妙招嗎？
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?
將音量電位器的音量調(diào)到，即沒(méi)有聲音（在無(wú)聲源的情況下）。此時(shí)，揚(yáng)聲器應(yīng)該沒(méi)有聲音。如果有嗡嗡聲，是功放功率整流部分濾波電路中的電解電容變化、故障或容量變化。它太小了；如果功放開(kāi)的聲音很大，有很大的嗡嗡聲，這是功放的音頻輸入屏蔽不好造成的，檢查并排除屏蔽故障。
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.
每個(gè)原裝的外殼必須接地，尤其是音頻輸入線必須屏蔽，護(hù)套線必須準(zhǔn)備好并接地。喇叭發(fā)出嘶嘶聲。這種情況多為整體屏蔽不良，或電源變壓器的初級(jí)和次級(jí)繞組隔離不好造成的，隔離層應(yīng)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.
轉(zhuǎn)動(dòng)電源插頭可以減少“嘶嘶”的聲音。如果還是不行，在電源輸入端（變壓器的電源輸入端）串聯(lián)兩個(gè)工作電壓為250V的4700P電容，中心抽頭接地。有些元件有虛焊，稍有震動(dòng)就容易產(chǎn)生噪音。您可以用筷子將每個(gè)原件一個(gè)一個(gè)地敲擊以檢查。
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.
報(bào)告廳音響出現(xiàn)噪音有什么處理妙招嗎？以上所講解的內(nèi)容大家可以借鑒，但是要注意的是，應(yīng)該是根據(jù)自己音響的實(shí)際情況來(lái)做處理，如果還有問(wèn)題的話歡迎來(lái)此
m.74seba.com咨詢。
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 m.74seba.com consultation.
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