Causes of current sound in speakers:

Common reasons for current sound in speakers mainly include: bad ground wire noise and circular grounding; poor internal wiring and shielding strategies; power supply ripples Noise, that is, AC whistling; circuit board traces or grounding layout; in more than half of the cases, there is no grounding problem.

Most speakers will have current sound, and the only difference between high and low is the so-called "signal-to-noise ratio".

It involves circuit design, component selection and other issues. If the sound of electricity is unbearable, there may be a problem. Conditional volume potentiometer, if the current sound can be adjusted, there is a problem with the pre-stage prevention.

If it cannot be adjusted, it is a power amplifier stage failure. The power supply filter capacitor is most likely to fail, and the power transformer is poorly shielded. There will be a sound of electricity. If it is confirmed that the amplifier is faulty, it is best to send it for repair. Most speakers are active speakers, and there must be an amplifier inside them, so noise is inevitable.

Extended information:

1. Computer speakers have current sound and stray electromagnetic wave interference, which are relatively common in life. The four sources of speaker wires, frequency dividers, wireless devices or computer hosts Everything will become a source of interference. Place the main speakers as far away from the computer host as possible and reduce peripheral wireless devices.

2. There is interference from the power transformer, which is caused by magnetic leakage from the power supply of the multimedia speakers. When conditions permit, the effect of adding a shield to the transformer is very obvious, which can minimize the magnetic leakage. Blocking and shielding covers can only be made of iron-type materials. You should try to choose products from big brands and solid materials. In addition, using an external transformer is also a good solution.

Precautions for using speakers:

1. Do not use volatile solutions to clean the machine, such as using gasoline, alcohol, etc. to wipe the surface of the machine, and use a soft cloth to wipe dust. And when cleaning the machine casing, unplug the power supply first.

2. The machine is generally not waterproof. If it gets wet, use a dry cloth to wipe away the water stains and wait until the water is completely dry before you can start working.

3. Do not place heavy objects on the machine to avoid deformation of the machine.