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The connection of the mixer

Mention the sound system, of course, we will first think of the mixer, mixer, there will be a lot of description method, the most appropriate is the mixer compared to a sound system of the heart, and how the heart of the blood circulation, Directly affect the performance of the entire system. Image of the mixer is like a large water treatment pool, we put a variety of sources like water into the same pool into the pool, and then in the pool of inflow of a variety of water for reasonable treatment, and finally from a variety of Different channels flow out, the whole process is so simple. So the connection to the console is nothing more than: input and output two parts.

(A), the mixer input part of the line connection:

The mixer's input signal is roughly divided into low-impedance microphone signal input and high-impedance line signal input. In fact, we can distinguish between low resistance and high resistance as water pressure or water velocity difference. For example: high-impedance input level is high, as if the water pressure is large, the water is more urgent, directly into the mixer to the pool on the right, do not have any links in the middle to adjust the water pressure and water flow; but Low resistance input level is low, as if the water pressure is very low, the water is very slow, directly into the mixer this pool is not appropriate, we need to add a large pool in the pump, the low resistance of low water Press it to increase, so that the water speed to speed up! So the mixer's low-impedance input channel lines are built-in dedicated circuit amplifier, the low level to the appropriate level. So that the characteristics of water to beats by dre studio describe the low resistance signal and high impedance signal we should be well understood.

Only to distinguish between the high resistance, low resistance before they can choose the correct wire for the appropriate connection, the general mixer input socket can be divided into three kinds:

1, TRS: high impedance input part usually use 6.35cm TRS stereo connector for balanced input, try not to use 6.35 TS tone (sound) connector for unbalanced input, and now we use most of the sound source playback equipment such as: CD, VCD, DVD, MD, MP3, and most of the output signal of the instrument are usually high impedance signal.

2, XLR: and low resistance is usually used XLR XLR connector for balanced input, and now most of the wired microphones are usually connected with a low-impedance jack and mixer.

3, RCA: If some of the console with TAPE recording input, it is usually using RCA Lotus connector to connect.

Mixer signal input part of the need to pay attention to the problem: the above has been introduced to the mixer's input signal can be divided into low resistance and high impedance input, but how to accurately define a signal is a low resistance or high resistance need to be flexible. For example, according to the standard, the keyboard, electric bass, electric guitar, etc. are high impedance signal, use 6.35 plug input to the mixer can be, but some places from the stage to the mixer between the cable is too long, line resistance Large, coupled beats earbuds with lighting and other system interference, so that the noise floor of this signal line has been great, even if not enter any sound source signal, the mixer on the channel input channel gain will be opened when there will be A lot of background noise, as described above: This line is a river, and now the river has been too much sediment, this time the line a lot of noise or can not be changed, and the line side The volume of the instrument has been open to the maximum and can not increase, that is, the river can only give you so deep water, and how to do it? If the use of high impedance signal input is equal to the river did not increase the water, water quality can not be changed, of course, no change in sound quality; if the XLR plug from the low impedance socket input signal, the river will be a little beats headphones cheap light through the low impedance amplifier Of the amplification, so deep water, water quality is good, sound quality Ye Hao. It seems not quite true, we can try the next. I am doing a lot of works now, the band is basically using the XLR socket from the low resistance input, although the surface does not look standard, but in fact it is to reduce the band noise of the move. So we still have to be flexible, in practice to find the best way to work.

(B), the mixer output part of the line connection:

Now the output of the professional mixer has a lot of jacks, and each division, unlike the input part of the socket although the mouth is relatively simple. So be careful when connecting the output signal. Usually the main output part of the mixer or the total volume output, the volume of the group output, AUX output, etc., in general, the output part of the mixer can be divided into six parts:

1, marshalling output: If we subwoofer through the 1-2 group to control the volume alone, then only from the mixer 1-2 group corresponding output jack output audio signal, the output of the majority of the output of the group using TRS Stereo jacks for balanced output, and of course some with a XLR jack.

2, the main channel output: L-R main channel is usually XLR XLR balanced output, some small mixer is also useful TRS stereo jack instead.

3, AUX output: AUX output in the mixer is the most commonly used to output to the human voice effects, followed by the band or singer used to provide monitoring signals, of course, open to other uses, such as: recording, used as auxiliary speakers Signal and so on. AUX usually uses TRS stereo jack output signal.

4, Direct direct output part: more professional mixer Each input channel there is a "Direct direct output" jack, the socket can be provided to other equipment for recording, monitoring, etc., the mixer's per channel is usually Is the use of TRS stereo jack output signal. For example, a live television station needs to live, live live, if there are 20 way the source signal, then we can put the 20-channel audio signal input to the television console, and then use the TV console Direct Direct output Jack to the 20-channel audio signal and then enter the live performance of the mixer. Of course, now for the sake of safety beats by dre are the first 20-channel audio signal through the signal amplifier to adjust the distribution, and then were sent to the television console, live performance mixer, standby emergency mixer, recording mixer or other Equipment and so on.

5, recording output: the general analog recording output signal jacks are mostly used RCA lotus joints. If it is a digital signal that may use fiber, FireWire and other digital output.

6, INS insert the plug socket: the mixer in this socket between the input and output, it uses TRS stereo connector to connect. About INS Insert Insert a lot of sound engineers may not be used, it can be a peripheral device into a mixer input channel, group channel or main (left and right channel) channel, the insertion of the channel alone sound signal For processing. When using the TRS three-core stereo connector to connect, the method is from the TRS three-core stereo plug head output signal, connected to the device to be inserted into the input, and then sent from the output of the device signal received TRS junior The end of the stereo plug, and then into the mixer. For example, we can use this method to the mixer 1,2-way microphone into an equalizer, it is equivalent to the 1,2-way microphone cut off the water pipe, plus a water processor (equalizer), and then enter Mixer, so adjust the tone better.

Above for the mixer connection, whether it is the input part of the mixer or the output part of the use of the socket and the signal connection is basically a few of these, but the connection should pay attention to correct.