會議室音響系統是會議室的有機組成部分,也是故障率存在的節點部分,小編建議:提前了解會議音響設備故障做好預防措施,跟著
山東會議室音響廠家來看看是怎樣回事吧。
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.
音響無聲
Soundless
檢查所有設備是否都已開啟,各設備的音量控制鈕是否都已調到合適位置,調音臺上各通道路徑開關是否已選通,檢查各連接線是否已連接正確、可靠。如還無聲則需逐級檢查,可以從后向前逐級檢查,也可從前向后逐級檢查。
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.
系統哼聲大
The system is noisy
哼聲往往是由于接地不良或不對,系統的設備不在同一路電網上,地電位嚴重相差引起的,而連接線的屏蔽層脫焊或屏蔽線接得不對而形成地電流回路,也會引起哼聲大。所以應著重檢查這些方面,必要時應加隔離用音頻變壓器,以便把前后級設備間的“地”斷開,而信號仍然暢通。
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.

系統削波失真
System clipping distortion
先檢查各設備上的削波指示燈是否亮著,如并未發現削波指示燈連續亮,則可以選擇系統靠中間的一臺設備把音量降低幾個dB,以判斷是該設備的前面已有削波失真,還是在該設備后面才產生的削波失真。如此經過幾次調節音量控制器,即可判斷削波來自哪一級。一般來說,確實是信號過強引起的削波,則應在前級設備上就將音量電平降下來,如屬設備故障(如設備內的工作電源不正常或負反饋通路開路等)則須更換設備。
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.
音響系統聲音小
The sound system is low
聲音小往往是連接線問題居多。如連接線短路,插頭、插座配合不好,連線虛焊等,在判定連接線沒有問題后再懷疑設備,檢查是哪一臺設備有了故障,然后再更換設備。如聲音小還伴隨聲場嚴重不均勻則應考慮揚聲器的相位是否接錯。
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.
系統干擾噪聲
System interference noise
系統設計時注意采用平衡連接,到功率放大器輸入端為止的所有音頻線都應該采用屏蔽性能良好的音頻電纜,并且連接線的長度不要太長,接地良好。在這些措施都到位的情況下,還有干擾信號出現時,則應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.
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.zkvd.cn Consult.