What are the problems to be noted when using the mixer?

1: mixer signal input part of the need to pay attention to the problem: the above has been introduced into the input signal is generally divided into low resistance and high resistance input, but how to define a certain signal is a low resistance or high resistance on the need for flexibility. For example, in accordance with the standard, electronic organ, electric guitar belong to the high impedance signal, use 6.35 plug input to the mixer can, but in some places, from the stage to the connection line between the mixer is too long, line resistance, coupled with the interference of lighting system, so that the signal lines of the background noise has been great, even without any input audio signal to the line input channel gain open there will be a lot of noise in most of the console, as described above: this line is a river, the river sediment is now too much, is this line in noise many still can not change, but the line there has been open to the maximum volume of instruments to increase again, that the river can only give you put so much water, how to do? If no increase with high resistance signal input is equal to the water in the river, the water quality can not be changed, of course, there's no way to change the sound; if the XLR plug from the low resistance socket input signal, the point will be enlarged by the shallow low resistivity amplifier, so that the depth of water, good water quality, good sound quality. It doesn't seem to be true. A lot of work I do now, the band is input from the low resistance with XLR although it seems, is not standardized, but is actually a good way to reduce the noise of the band. So the sound workers need to be flexible, need to seek truth from facts, in practice to find the best way to work.
 
2:AUX need to pay attention to the problem: we know that AUX has the Clippers before / after conversion, standard required to stage and monitor the signals to be transmitted by the fader before but in performance of general or post fader send number. The AUX signal is used as a stage monitor as an example: we use B two CD players take turns to play music, A music playing when we finished down this road volume fader can turn off the sound, and then the B volume fader to push up. But the A CD player could play the disc, is still playing, and if the AUX signal sent by post fader, the stage speakers will not have a A CD voice out, but if you are using AUX signal before sending the fader, the stage speakers will still send A CD voice out, so at the same time there will be the stage speakers are A, B two CD player voice, there is no way to listen to the singer, although at this time outside the main volume was not affected. Therefore, even if we need to carefully adjust the AUX transmission part.
 
3: assignment problem: Marshalling marshalling aspects need to pay attention to the problem is relatively simple, because all grouping separate volume output without switching into the master volume, so we need to carefully, for example: 5-6 in marshalling marshalling which we can control the bass sound, the sound mixer marshalling most input channel can 5-6 according to it, but if the microphone channel should be careful, otherwise press the microphone channel 5-6 marshalling will produce the bass sound feedback; another point is that since we have 5-6 marshalling from behind the corresponding output independent output signal, it is no longer the total volume of the mixer's output, which is the 5-6 group the total volume of the switch console can not be pressed.
 
4: phantom power: phantom power most mixer will have a 48 volt, it can be used to promote a variety of condensermicrophones, but because it is from the current transmission line of the microphone, so always check the microphone line, ensure the smooth line, otherwise it will not contact line a great current impact sound. There is a phenomenon is: if in a mixer you use meeting condenser microphone with battery, don't open the phantom power, or between the two will interfere with each other, the sound of the rain in general “ &rdquo Vujacic sound. sound
 
5: audio input: input channel mixer is most recordings through simple control and total volume output directly through the mixer, so carefully, do not generate misoperation, suddenly put out the recording channel sound from the mixer's main volume.
 
6: output level: we know the standard recording level is 0dB, but the actual performance will generally be a lot more, and even reached +10 dB, so don't see the red light is actually in use be frightened and change color, realistic, signal level slightly exceed the standard is reasonable, then the sound effect is the best. There is also a need to pay attention to is: when the peak level indicator light reaches +4dB, and the corresponding output port of the volume level to reach 0 of 0dB.775 v.
 
7: some other functions button: in addition to the important regulating knob on the console, there are many features of knobs, buttons or switches, for example: positive and negative phase conversion button, high or low, the fader button was removed before and after conversion button, mute button, monitor button and so on, we will often use some skills, not often used based on the understanding of its basic functions, do not often go to regulate them, avoid misoperation.
 
8: the headset and field effect: a lot of love has been with the total sound headset headset tuning, of course is very important, but after all, and the scene of the sound very different sound headset, so still have to go to the scene to listen. Not unrealistic, wishful thinking of the headset as a measure to know in the recording, the headset can be used as a standard; and in the field of performance when the headset is just a tool, but the standard is our ears, to go to the scene to listen to.