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在音響擴聲系統施工中常會(huì )因為采用的線(xiàn)材不合適，使用的安裝方式不合理，接口焊接不規范，接頭使用不標準等等原因引起的系統故障，同時(shí)不規范的施工還會(huì )造成維護和維修不便。那么音響擴聲系統施工中的注意事項有什么呢？報告廳音響廠(chǎng)家為您講解。

In the construction of the sound reinforcement system, system failures are often caused by improper wires, unreasonable installation methods, nonstandard interface welding, nonstandard joint use, etc. at the same time, nonstandard construction will also cause inconvenience in maintenance and repair. What are the precautions in the construction of the sound reinforcement system? The audio manufacturer in the lecture hall will explain it to you.

擴聲系統對施工工藝的要求比較高，因為在實(shí)際音頻信號很容易受到外界干擾，例如音頻信號在設備之間傳輸時(shí)很容易受到電磁干擾、強電干擾和信號與信號之間的相互干擾等等。為避免音頻信號受到外界干擾通常采用以下抗干擾手段。

The sound reinforcement system has high requirements on the construction process, because the actual audio signal is easily affected by external interference, such as electromagnetic interference, strong current interference and mutual interference between signals when the audio signal is transmitted between equipment. In order to avoid external interference to the audio signal, the following anti-interference measures are usually adopted.

防止電源信號干擾。由于電源采用50-60Hz的頻率進(jìn)行傳輸，而這段頻率人耳是可以明顯辨別的，因此由于設備接地不良、信號接地不良和信號線(xiàn)屏蔽不良等原因，經(jīng)常會(huì )在音箱中聽(tīng)到低頻交流聲，此類(lèi)噪聲較容易辨認。此類(lèi)干擾信號多是由于電源音頻，因此在實(shí)際工程中保證系統具有“干凈”的電源尤為重要，同時(shí)需要使用三項電源中的同一個(gè)相位的電源，避免電源相位差引起的電源噪聲。

Prevent power signal interference. Since the power supply is transmitted at a frequency of 50-60Hz, which can be clearly identified by human ears, low-frequency AC noise is often heard in the speaker due to poor equipment grounding, poor signal grounding and poor signal line shielding, which is easy to identify. Most of such interference signals are due to the audio frequency of the power supply. Therefore, it is particularly important to ensure that the system has a "clean" power supply in the actual project. At the same time, the power supply with the same phase among the three power supplies needs to be used to avoid the power supply noise caused by the phase difference of the power supply.

防止電磁煩擾。此類(lèi)干擾信號經(jīng)常影響系統的信號傳輸，為避免此類(lèi)干擾要注意信號線(xiàn)的抗干擾能力，要采用平衡式傳輸方式和兩芯屏蔽音頻專(zhuān)用電纜進(jìn)行音頻進(jìn)行的傳輸。

Prevent electromagnetic interference. Such interference signals often affect the signal transmission of the system. In order to avoid such interference, attention should be paid to the anti-interference ability of the signal line. Balanced transmission mode and two core shielded audio special cable should be used for audio transmission.

在同一個(gè)系統中，信號與信號之間的相互干擾較少。但也會(huì )出現系統串音嚴重的現象，即是某個(gè)通道已經(jīng)處于靜音狀態(tài)，而系統仍然存在聲音。這時(shí)就需要嚴格檢查線(xiàn)路連接方式。串音嚴重的問(wèn)題通常是施工人員將信號線(xiàn)錯連接在某個(gè)設備的屏蔽上而引起的。此類(lèi)故障通常需要檢查設備連接的做法是否標準。

In the same system, the mutual interference between signals is less. However, serious system crosstalk may also occur, that is, a certain channel has been in the mute state, but the system still has sound. At this time, it is necessary to strictly check the line connection mode. The serious problem of crosstalk is usually caused by the construction personnel connecting the signal line to the shield of some equipment by mistake. Such failures usually require checking whether the equipment connection practices are standard.

接頭焊接的高標準完成。這類(lèi)要求可以說(shuō)是擴聲系統穩定工作和避免各類(lèi)型干擾的基礎方法。音響系統施工實(shí)際上可以從另一個(gè)角度認為是在將各個(gè)設備進(jìn)行連接的工作。在這個(gè)連接過(guò)程中其實(shí)只有連接線(xiàn)纜和各個(gè)連接接頭。只要線(xiàn)纜使用符合要求，接頭焊接工藝達到技術(shù)要求可以避免絕大多數問(wèn)題。

High standard completion of joint welding. This kind of requirement can be said to be the basic method for the sound reinforcement system to work stably and avoid various types of interference. The construction of the sound system can actually be regarded as the work of connecting various equipment from another perspective. In this connection process, there are only connecting cables and various connecting connectors. As long as the use of cables meets the requirements, the joint welding process can meet the technical requirements to avoid most problems.

此外要布線(xiàn)要保證整潔，線(xiàn)路平行。線(xiàn)槽和機柜內線(xiàn)路要使用扎線(xiàn)帶和專(zhuān)用工具將電纜扎其并在所有電纜接頭處做詳細線(xiàn)標，線(xiàn)路連接方式、接口和線(xiàn)標也要有相應圖紙相對應，并有記錄可以查詢(xún)。更多注意事項就來(lái)我們網(wǎng)站http://www.djfrj.net.cn咨詢(xún)了解吧！

In addition, the wiring shall be clean and parallel. Cable ties and special tools shall be used to tie the cables in the trunking and cabinet, and detailed line marks shall be made at all cable joints. The line connection mode, interface and line mark shall also be corresponding to corresponding drawings, and records shall be available for inquiry. For more information, please visit our website http://www.djfrj.net.cn Consult and understand!