更新時(shí)間：2022-12-20
文章來(lái)源：http://www.djfrj.net.cn/
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音響系統通電后還需進(jìn)一步細致的調整、調試，這些調試工作一般要借助一些專(zhuān)用的儀器、設備才能很好地完成。下面
山東音響廠(chǎng)家來(lái)講講音響系統的電平調試步驟。
After the audio system is powered on, it needs to be further adjusted and debugged. These debugging work can be well completed with the help of some special instruments and equipment. Next, Shandong professional audio manufacturers will talk about the level debugging steps of the audio system.
1.線(xiàn)路檢
1. Line inspection
按照系統線(xiàn)路圖紙，仔細檢查線(xiàn)路連接，確認線(xiàn)路均能正常運作。
According to the system circuit drawing, carefully check the circuit connection to ensure that the circuit can operate normally.
2.設備初始狀態(tài)的設置
2. Setting of initial state of equipment
將功放輸入設置為小，將所有周邊設備的輸入輸出旋鈕設置為0分貝位置或中間位置。按照從前級到后級的順序通電（先不開(kāi)功放），檢查所有設備通電正常后，給功放通電。
Set the input of the power amplifier to small, and set the input/output knobs of all peripheral devices to 0dB position or middle position. Power on the power amplifier in the order from the previous stage to the next stage (do not turn on the power amplifier first), and power on the power amplifier after checking that all equipment are powered on normally.
3.初步檢查系統狀態(tài)
3. Preliminary check of system status
此時(shí)適當開(kāi)大功放的增益控制，播放一張熟悉的CD，調整調音臺輸入電平到基本正常位置。慢慢推起調音臺推子，聽(tīng)聽(tīng)音箱發(fā)出來(lái)的聲音是否正常，是否失真，如果不正常立即關(guān)機檢查。
At this time, properly turn on the gain control of the power amplifier, play a familiar CD, and adjust the input level of the mixer to the basic normal position. Slowly push up the mixer knob, listen to whether the sound from the speaker is normal and distorted, and immediately shut down and check if it is abnormal.
4.音箱及系統極性檢測
4. Speaker and system polarity detection
系統基本正常后，打開(kāi)所有設備電源，功放電平設置在大，拉下調音臺輸出推子，將相位儀發(fā)生器接入調音臺輸入通道，打開(kāi)相位儀電源調整輸出增益和調音臺輸入增益到調音臺指示表為0分貝。
After the system is basically normal, turn on the power supply of all equipment, set the power amplifier level at large, pull down the output pusher of the mixer, connect the phase meter generator to the input channel of the mixer, turn on the power supply of the phase meter to adjust the output gain and the input gain of the mixer to 0 dB on the mixer indicator.
5.相位調整
5. Phase adjustment
如果同時(shí)使用超低頻和全頻的組合，由于分頻系統的存在以及安裝位置的原因，可能會(huì )有交叉頻率干擾或延時(shí)時(shí)間不同引起的相位問(wèn)題，所以需要進(jìn)行相位調整。粉紅噪聲生器接到調音臺輸入通道，調整電平到正常位置，相位儀測試話(huà)筒放在場(chǎng)地中間，與音箱成等邊三角形的位置。
If the combination of ultra-low frequency and full frequency is used at the same time, there may be cross frequency interference or phase problems caused by different delay times due to the existence of the frequency division system and the installation location, so phase adjustment is required. The pink noise generator is connected to the input channel of the sound mixing console, and the level is adjusted to the normal position. The phase meter test microphone is placed in the middle of the field, forming an equilateral triangle with the speaker.
6.頻率均衡
6. Frequency equalization
在做完以上調節后，接下來(lái)即需要調節系統的頻率響應曲線(xiàn)。將頻譜儀的測試話(huà)筒放在坐席區域內的某一位置，播放粉紅噪聲聲源，觀(guān)看頻譜儀顯示，對有缺陷的地方，利用均衡器進(jìn)行修正。將測試話(huà)筒放到不同的地方，多變化幾個(gè)位置，反復調整均衡使各個(gè)區域的頻響曲線(xiàn)都盡可能平直。
After the above adjustment, the frequency response curve of the system needs to be adjusted. Put the test microphone of the spectrometer at a certain position in the seating area, play the pink noise source, watch the spectrometer display, and use the equalizer to correct the defects. Put the test microphone in different places, change several positions, and adjust the balance repeatedly to make the frequency response curve of each area as straight as possible.
7.調試動(dòng)態(tài)控制設備
7. Commissioning of dynamic control equipment
一般動(dòng)態(tài)調節設備就是壓限器，壓限器如果是鏈式連接串連在系統中，一般都是作為保護系統使用，所以主要是利用壓限器的限幅功能。根據個(gè)人需求，這里只描述其中一種壓限器設置方法，可將壓限器設置為直通（BYPASS），輸入輸出增益設置為0分貝，壓縮比設置為"無(wú)窮大"，然后從調音臺送出粉紅噪聲信號，逐漸推大，觀(guān)察功放的輸入電平指示燈，當削波指示燈（CLIP）點(diǎn)亮后。
The general dynamic regulating equipment is the pressure limiter. If the pressure limiter is chain connected in series in the system, it is generally used as a protection system, so it mainly uses the amplitude limiting function of the pressure limiter. According to personal requirements, only one of the pressure limiter setting methods is described here. The pressure limiter can be set to BYPASS, the input/output gain is set to 0 decibels, and the compression ratio is set to "infinity". Then the pink noise signal is sent from the mixer and gradually pushed up. Observe the input level indicator of the power amplifier when the clipping indicator (CLIP) is lit.
This is the end of the audio system level debugging procedure. If you have any ideas or needs, you can come to our website at any time http://www.djfrj.net.cn Consult!
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