很多人認為音響很復雜，容易出錯，特別是大型歌舞表演、重要會議擴音等，即使有經驗的音響師遇到重要人物特別交代后，也會出錯。那么在大功率下，要達到出色
山東舞臺音響效果，我們要解決什么呢？
Many people think that professional audio is very complicated and easy to make mistakes, especially in large-scale song and dance performances and important conference loudspeakers. Even experienced sound engineers will make mistakes when they meet important people. So what should we focus on to achieve excellent sound effects on Shandong stage under high power?
箱振。
Box vibration.
因為箱體振動將抵消特定頻率的聲壓，造成失真;另一種箱振壞，它能發出特定幾何噪音，這種噪音好象兩塊木板互相撞擊發出的聲音。
Because the vibration of the box will cancel the sound pressure of a specific frequency and cause distortion; The other kind of box is damaged by vibration. It can make specific geometric noise, which is like the sound made by two wooden boards hitting each other.
當然這種噪音是由于木板及生產工藝造成的，例如木板容易變形/生產工藝落后/木板在由大鋸成小塊時沒成直線，而出現鋸齒狀，這樣造成在膠合過程中不能完全均勻，而出現后來的噪音。
Of course, this kind of noise is caused by the wood board and the production process. For example, the wood board is easy to deform / the production process is backward / when the wood board is cut into small pieces by large sawing, it does not form a straight line, but appears serrated, which causes the noise to be generated later.
單位諧振。
Unit resonance.
由于單元結構不同，為什么要用鋁盆架?在小功率下沒什么特別，在大功率下，由于聲浪的作用，音箱表面多少會產生振動，(當然理想的音箱設計，在大功率下音箱任何部位都不應感到振動)這種振動回傳到固定在上面的單元，這時如果單元揚聲器的匡架不夠牢固，低音盆架也會與面板同時振動，這時音圈在磁液中的中心位置會受到破壞，造成嚴重失真，甚造成擦圈，后音圈燒斷。
Because of the different unit structure, why use aluminum basin frame? At low power, there is nothing special. At high power, due to the effect of sound waves, the surface of the speaker will vibrate. (of course, the ideal speaker design should not feel vibration at any part of the speaker at high power.) this vibration will be transmitted back to the unit fixed on it. At this time, if the option frame of the unit speaker is not firm enough, the subwoofer will vibrate with the panel at the same time. At this time, the central position of the voice coil in the magnetic fluid will be damaged, It may cause serious distortion, or even cause coil wiping and rear voice coil burning.
為降低成本，用很薄的鐵板做揚聲器的盆架，音箱品質不好，這方面也是其中原因之一。通常我們在150WRMS功率的揚聲器其盆架所用鐵板厚度不能低于1.2mm。當然鋁盆架是較好，因為鋁盆架的盆架是鑄造而不是沖壓成型，因此其幾何變形比沖壓的鐵盆架要小的多。
In order to reduce the cost, a very thin iron plate is used as the basin frame of the speaker. The quality of the speaker box is poor, which is also one of the reasons. Generally, the thickness of the iron plate used for the basin frame of the speaker with 150wrms power shall not be less than 1.2mm. Of course, the aluminum basin frame is better, because the aluminum basin frame is cast rather than stamped, so its geometric deformation is much smaller than the stamped iron basin frame.
音源，所謂聲音來源。
The sound source is the so-called sound source.
我們很多時候去舞廳，聽到的低音Bass與錄音CD出來的完全不同，這并不是因為舞廳音箱不好，(當然確實也有不好的)而是聲音來源不對，具體說是收音方法錯誤。
We often go to the dance hall, and the bass we hear is completely different from that recorded on the CD. This is not because the sound box in the dance hall is not good (of course, there are bad ones), but because the sound source is wrong. Specifically, the sound receiving method is wrong.
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