更新時(shí)間：2022-08-31
文章來(lái)源：http://gulfbaader.com/
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很多人認(rèn)為音響很復(fù)雜，容易出錯(cuò)，特別是大型歌舞表演、重要會(huì)議擴(kuò)音等，即使有經(jīng)驗(yàn)的音響師遇到重要人物特別交代后，也會(huì)出錯(cuò)。那么在大功率下，要達(dá)到出色
山東舞臺(tái)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?yàn)橄潴w振動(dòng)將抵消特定頻率的聲壓，造成失真;另一種箱振壞，它能發(fā)出特定幾何噪音，這種噪音好象兩塊木板互相撞擊發(fā)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(dāng)然這種噪音是由于木板及生產(chǎn)工藝造成的，例如木板容易變形/生產(chǎn)工藝落后/木板在由大鋸成小塊時(shí)沒成直線，而出現(xiàn)鋸齒狀，這樣造成在膠合過(guò)程中不能完全均勻，而出現(xiàn)后來(lái)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(jié)構(gòu)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(huì)產(chǎn)生振動(dòng)，(當(dāng)然理想的音箱設(shè)計(jì)，在大功率下音箱任何部位都不應(yīng)感到振動(dòng))這種振動(dòng)回傳到固定在上面的單元，這時(shí)如果單元揚(yáng)聲器的匡架不夠牢固，低音盆架也會(huì)與面板同時(shí)振動(dòng)，這時(shí)音圈在磁液中的中心位置會(huì)受到破壞，造成嚴(yán)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(yáng)聲器的盆架，音箱品質(zhì)不好，這方面也是其中原因之一。通常我們?cè)?50WRMS功率的揚(yáng)聲器其盆架所用鐵板厚度不能低于1.2mm。當(dāng)然鋁盆架是較好，因?yàn)殇X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(lái)源。
The sound source is the so-called sound source.
我們很多時(shí)候去舞廳，聽到的低音Bass與錄音CD出來(lái)的完全不同，這并不是因?yàn)槲鑿d音箱不好，(當(dāng)然確實(shí)也有不好的)而是聲音來(lái)源不對(duì)，具體說(shuō)是收音方法錯(cuò)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.
How to achieve excellent sound effect under high power? Do you have any different ideas about this? If so, welcome to our website http://gulfbaader.com Consult more about audio.
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