Professional Audio Basics.Bar sound brand

　　The overall power configuration of the audio system is very important. The following points need to be paid attention to:

　　Three-phase power supply: Generally, places where professional audio equipment is used will apply for the installation of three-phase power supply. More important places will also use two independent three-phase power supplies. If one of them fails, the entire system will not be paralyzed. ; Even very important places will use a backup power supply such as a "UPS" similar to a computer, which shows how important the power supply is.

　　Separate audio and lighting power supplies: The audio system and lighting must have their own power supplies, otherwise one is prone to interference, and the other is not safe to work.

　　Total power distribution: It is not enough to have a strong power supply, but also pay attention to the distribution of power; There must be at least 2 independent power supplies. Each independent power supply is controlled by the corresponding air switch, so it is very convenient for us to switch the equipment.

　　Audio system wiring failure

　　Power line failure: There are many places where power is used in an audio system, and various power lines are required to connect, such as: mixers and audio players and other power supplies, peripheral equipment power supplies, power amplifier power supplies, stage power supplies, Active speaker power supply, video system power supply, etc., there are many parts that need power in a place, so the power connection cable should be safe and reliable, and try to avoid failure.

　　Signal line failure: If a sound system is compared to a person, then the signal connection line of the sound system is like a human blood vessel, and the "blood circulation" directly affects the stability of the sound system.

　　Amplifier and speaker connection line failure: Everyone pays more attention to the connection between the power amplifier and the speaker, and will use good quality and thicker speaker cables. The speaker line is generally short-circuited when it fails. Now the speakers all use 6.35 plugs, and the risk of short-circuiting such a plug will greatly increase; the speaker line is rarely open-circuited, so if the thick line is open-circuited, it is usually artificial. It's not likely to be a problem with the wire itself.

　　Human operation failure of sound system

　　"Technology is people-oriented", which is not bad at all. No matter how good or advanced the equipment is, people must operate it. Of course, people will make mistakes. Therefore, some operating errors in the audio system are inevitable. We can only study hard, strengthen ourselves, hone ourselves, accumulate more experience, and try our best to avoid the failure caused by this kind of human error.

　　Signal connection problem:

　　1. The connection between the audio source playback device and the mixer: All kinds of CDs, DVDs, MDs, decks, etc. should be connected to the mixer with the matching wires, generally inserted into the high-resistance port.

　　2. There are dynamic microphones, condenser microphones, etc., which are generally plugged into the XLR low-impedance port. However, the wireless microphone signal is amplified by the receiver, and it is necessary to experiment to know which end is suitable for insertion.

　　3. In principle, the signal output from the band and other equipment should be inserted into the high-impedance port, but if the line is long and the interference is large, it can also be inserted into the low-impedance signal port.

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The sound engineer tells you: how to protect your hearing.