更新時間：2021-06-05
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有時候音響出問題，大家可能會認為是連接出現(xiàn)了問題。那么你知道音響的鏈接有平衡和非平衡之分嗎？今天山東音響來帶大家了解一下音響的連接！
Sometimes there's something wrong with the stereo. You may think that there's something wrong with the connection. Do you know that there are balanced and unbalanced audio links? Today, Shandong professional audio to take you to understand the audio connection!
非平衡又叫單端輸入或單端輸出。一個信號端和一個參考端。
Unbalanced is also called single ended input or single ended output. A signal terminal and a reference terminal.
平衡又叫雙端輸入或雙端輸出。兩個信號端其中一個正向另一個反向。電子平衡中還有“地”。
Balance is also called double input or double output. One of the two signal terminals is forward and the other is reverse. There is also "Earth" in the electronic balance.
平衡電路有兩種：
There are two kinds of balance circuit
1、變壓器平衡：它是真 正意義上的平衡。它有極 高的共摸抑 制比、輸入輸出完全隔離、無直流、無地線引起的交流聲、接成非平衡時，反向輸出端接地，增益無變化。它的缺點是平衡變壓器造價昂貴，頻響較難做到平直。
1. Transformer balance: it is the true balance. It has very high common mode rejection ratio, complete isolation of input and output, no AC sound caused by DC or ground wire, and no gain change when the reverse output terminal is grounded. Its disadvantage is that the cost of balance transformer is expensive and the frequency response is difficult to be straight.
2、電子平衡：用電子線路做成的平衡。它的共摸抑 制比一般不會高于集成電路的供電電壓(約正負15伏)。輸入輸出不隔離，有可能因重復(fù)接地引起交流聲、接成非平衡輸出時，反向輸出端必 須懸空不能接地，且增益降低6dB。接成非平衡輸入時，反向輸入端必 須接地不能懸空。它的優(yōu)點是造價低廉，頻響較易做到平直。
2. Electronic balance: a balance made of electronic circuits. Its common mode rejection ratio is generally not higher than the supply voltage of IC (about + 15 V). When the input and output are not isolated, the AC sound may be caused by repeated grounding, and the unbalanced output is connected, the reverse output must be suspended and grounded, and the gain will be reduced by 6dB. When the unbalanced input is connected, the reverse input terminal must be grounded. It has the advantages of low cost and flat frequency response.
雖然變壓器平衡有許多優(yōu)點，但是由于其造價昂貴(頻響平直的變壓器)所以很少采用?，F(xiàn)在我們用的調(diào)音臺和周遍包括功放大多采用“電子平衡”。
Although transformer balancing has many advantages, it is seldom used because of its high cost (flat frequency response transformer). Now we use the mixer and peripheral power amplifier mostly use "electronic balance".
山東音響提示您由于電子平衡與變壓器平衡的區(qū)別，所以二者的接線方法是不一樣的，應(yīng)引起注意.
Shandong professional audio reminds you that due to the difference between electronic balance and transformer balance, the wiring methods are different
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