How to solve the problem with the home audio

[Home Theater Network] Many friends often encounter problems such as noise and current sound when using the audio every day. How to solve this situation? There are many reasons why there is no sound in the home audio. Generally speaking, the computer audio is mostly active speakers, and there must be an amplifier inside, so the noise is unavoidable (some poor quality active speakers have too low signal-to-noise ratio, and the boot has a loud sound. Bottom noise, this should be noted when purchasing.), the noise of active speakers can be roughly divided into electromagnetic interference, mechanical noise and thermal noise.

How to solve the problem with the home audio

1. Electromagnetic interference can be mainly divided into power transformer interference and stray electromagnetic wave interference. Generally speaking, the power transformer interference is caused by the magnetic leakage of the power supply of the multimedia speaker. The effect of adding the shield to the transformer is obvious when the conditions permit, and the magnetic leakage can be blocked to the maximum extent. The shield can only be used with iron. Type material production. We should try our best to choose big brands and solid materials. In addition, using external transformers is also a good solution.

2, stray electromagnetic interference is more common, speaker wires, crossovers, wireless devices or computer hosts will become interference sources. Keep the main speakers as far as possible from the host computer and reduce peripheral wireless devices.

3. Mechanical noise is unique to active speakers. During the working process of the power transformer, the iron core vibration caused by the alternating magnetic field will produce mechanical noise, which is very similar to the buzzing sound of the fluorescent lamp ballast. Choosing a good quality product is still the best way to prevent this noise. In addition, we can add a rubber shock absorber layer between the transformer and the fixed plate.

4. It should be noted that if the potentiometer is used for a long time, the metal brush and the diaphragm will have poor contact due to problems such as dust accumulation and wear, and noise will be generated when rotating. If the speaker's screws are not tightened, the inverted tube is not handled properly, and mechanical noise is also generated when playing large dynamic music. Dealing with such thermal noise can be done by replacing low-noise components or reducing the component's workload. In addition, lowering the operating temperature is also an effective method.

5, In addition, some computer speakers, when the volume is adjusted too large, there will be noise. This situation is because the output power of the power amplifier may be small, can not avoid the large dynamic peak signal caused by the music moment or because of the noise of the speaker overload, more home theater audio knowledge, welcome to pay attention to the home theater network WeChat public number: Cnhifi.

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