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會(huì)議室音響系統(tǒng)是會(huì)議室的有機(jī)組成部分，也是故障率存在的節(jié)點(diǎn)部分，小編建議：提前了解會(huì)議音響設(shè)備故障做好預(yù)防措施，跟著山東會(huì)議室音響廠家來(lái)看看是怎樣回事吧。

The audio system of the conference room is an organic part of the conference room and also a node part of the failure rate. The small editor recommends that we understand the failure of the conference audio equipment in advance and take preventive measures. Follow the Shandong conference room audio manufacturer to see what is going on.

音響無(wú)聲

Soundless

檢查所有設(shè)備是否都已開(kāi)啟，各設(shè)備的音量控制鈕是否都已調(diào)到合適位置，調(diào)音臺(tái)上各通道路徑開(kāi)關(guān)是否已選通，檢查各連接線(xiàn)是否已連接正確、可靠。如還無(wú)聲則需逐級(jí)檢查，可以從后向前逐級(jí)檢查，也可從前向后逐級(jí)檢查。

Check whether all devices are turned on, whether the volume control buttons of all devices are adjusted to appropriate positions, whether the path switches of all channels on the mixing console are turned on, and whether the connecting wires are connected correctly and reliably. If it is still silent, it needs to be inspected step by step. It can be inspected step by step from the rear to the front, or from the front to the rear.

系統(tǒng)哼聲大

The system is noisy

哼聲往往是由于接地不良或不對(duì)，系統(tǒng)的設(shè)備不在同一路電網(wǎng)上，地電位嚴(yán)重相差引起的，而連接線(xiàn)的屏蔽層脫焊或屏蔽線(xiàn)接得不對(duì)而形成地電流回路，也會(huì)引起哼聲大。所以應(yīng)著重檢查這些方面，必要時(shí)應(yīng)加隔離用音頻變壓器，以便把前后級(jí)設(shè)備間的“地”斷開(kāi)，而信號(hào)仍然暢通。

The hum is often caused by poor or incorrect grounding, the equipment of the system is not on the same power grid, and the ground potential is seriously different. However, the shielding layer of the connecting wire is desoldered or the shielding wire is incorrectly connected to form the ground current loop, which also causes the loud hum. Therefore, emphasis should be placed on checking these aspects. If necessary, an isolation audio transformer should be added to disconnect the "ground" between the front and rear equipment, while the signal is still unblocked.

系統(tǒng)削波失真

System clipping distortion

先檢查各設(shè)備上的削波指示燈是否亮著，如并未發(fā)現(xiàn)削波指示燈連續(xù)亮，則可以選擇系統(tǒng)靠中間的一臺(tái)設(shè)備把音量降低幾個(gè)dB，以判斷是該設(shè)備的前面已有削波失真，還是在該設(shè)備后面才產(chǎn)生的削波失真。如此經(jīng)過(guò)幾次調(diào)節(jié)音量控制器，即可判斷削波來(lái)自哪一級(jí)。一般來(lái)說(shuō)，確實(shí)是信號(hào)過(guò)強(qiáng)引起的削波，則應(yīng)在前級(jí)設(shè)備上就將音量電平降下來(lái)，如屬設(shè)備故障（如設(shè)備內(nèi)的工作電源不正常或負(fù)反饋通路開(kāi)路等）則須更換設(shè)備。

Firstly, check whether the clipping indicator light on each device is on. If the clipping indicator light is not found to be continuously on, you can select the device in the middle of the system to reduce the volume by several dB to determine whether the clipping distortion has occurred in front of the device or behind the device. In this way, after several times of adjusting the volume controller, it can be judged which level the clip comes from. Generally speaking, if the clipping is really caused by the strong signal, the volume level should be reduced on the previous level equipment. If the equipment is faulty (such as the working power supply in the equipment is abnormal or the negative feedback path is open), the equipment must be replaced.

音響系統(tǒng)聲音小

The sound system is low

聲音小往往是連接線(xiàn)問(wèn)題居多。如連接線(xiàn)短路，插頭、插座配合不好，連線(xiàn)虛焊等，在判定連接線(xiàn)沒(méi)有問(wèn)題后再懷疑設(shè)備，檢查是哪一臺(tái)設(shè)備有了故障，然后再更換設(shè)備。如聲音小還伴隨聲場(chǎng)嚴(yán)重不均勻則應(yīng)考慮揚(yáng)聲器的相位是否接錯(cuò)。

The low noise is often caused by the connection line problem. If the connecting line is short circuited, the plug and socket are not well matched, and the connection is faulty, the equipment shall be suspected after it is determined that the connecting line has no problem, and then the equipment shall be replaced. If the sound is small and the sound field is seriously uneven, it shall be considered whether the phase of the speaker is connected incorrectly.

系統(tǒng)干擾噪聲

System interference noise

系統(tǒng)設(shè)計(jì)時(shí)注意采用平衡連接，到功率放大器輸入端為止的所有音頻線(xiàn)都應(yīng)該采用屏蔽性能良好的音頻電纜，并且連接線(xiàn)的長(zhǎng)度不要太長(zhǎng)，接地良好。在這些措施都到位的情況下，還有干擾信號(hào)出現(xiàn)時(shí)，則應(yīng)該考慮加入射頻濾波器。

When designing the system, attention shall be paid to balanced connection. All audio cables from the input end of the power amplifier shall be audio cables with good shielding performance, and the length of the connecting cable shall not be too long and the grounding shall be good. When all these measures are in place and there are still interference signals, the RF filter should be considered.

常規(guī)來(lái)講，會(huì)議室受諸多條件顯著，導(dǎo)致音響系統(tǒng)機(jī)械故障，甚對(duì)音響造成大危害，所以在使用之前要做好預(yù)防準(zhǔn)備，更多注意事項(xiàng)就來(lái)我們網(wǎng)站http://www.r08sv.cn咨詢(xún)吧。

Conventionally, the conference room is subject to many significant conditions, leading to the mechanical failure of the audio system and even causing great damage to the audio system. Therefore, it is necessary to make preventive preparations before use. For more precautions, please visit our website http://www.r08sv.cn Consult.