Causes of professional audio failures and noise

Release time:

2020-05-22

Summary： Professional audio will inevitably malfunction, noise. For example, the impression itself is of poor quality, the speaker is disturbed, the interface or connection line is not in good contact, etc. Today, Shijiazhuang professional audio will take you to understand the causes of professional audio failures and noise!

Professional audio will inevitably malfunction, noise. For example, the impression itself is of poor quality, the speaker is disturbed, the interface or connection line is not in good contact, etc. Today, Shijiazhuang professional audio will take you to understand the causes of professional audio failures and noise!

Generally speaking, professional audio is active speakers, and there must be amplifiers inside, so noise is inevitable. The noise of active speakers can be roughly divided into electromagnetic interference, mechanical noise and thermal noise according to the source.

Electromagnetic interference can be divided into power transformer interference and stray electromagnetic interference. Generally speaking, the power transformer interference is caused by the magnetic leakage of the power supply of the multimedia speaker. When conditions permit, the effect of installing a shielding cover for the transformer is very obvious, which can block the magnetic leakage to the greatest extent. The shielding cover can only be made of iron profile materials. We should try to choose big brands, solid materials, in addition, the use of external transformers is also a good solution.

2. Stray electromagnetic wave interference is more common, speaker wire, frequency divider, wireless equipment or computer host will become the source of interference. The main speaker in the allowable conditions as far as possible away from the host computer, and reduce the peripheral wireless devices.

The reason why the stereo has no sound

1. Poor socket contact and poor signal line contact. Check clearly that the audio is powered on and each signal line is in good contact.

2. The most common fault of power amplifier is bad capacitor or burning power amplifier tube, which has the problem of our use, but most of the equipment itself is unstable.

3. Some power amplifiers will have a channel failure without sound, and the problem is still a circuit problem inside.

4. As for other faults, there are other problems such as poor contact of power amplifier volume potentiometer, imbalance of left and right channels, too frequent protection function, poor contact of rear panel work switch and signal socket. In short, power amplifier is a kind of electrical equipment that is prone to failure in professional sound system.

These are the reasons for the failure and noise of professional audio, hoping to help everyone!

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