The solution to the current sound of the speaker, how to solve the current sound of the audio

There are mainly the following situations when there is an electric current sound in the audio:

1. The two-core power cord forms a ground ring, and the ground ring is amplified to the horn through the power amplifier to generate current sound;

2. The quality and leakage of the power amplifier itself;

3. Interference and clutter of front-end signals;

Solution: 1. If the two-core power supply is not grounded, we can use the filtered power manager with the front-end signal, such as the KB-16 of Tianyi Audio, etc., he will filter out the clutter of the front-end two-core power supply, and the electrical environment is cleaner, which can effectively prevent the speaker from producing current sound;

2. The current sound itself is unavoidable, but the volume is different, if the signal-to-noise ratio of your amplifier is relatively high, then the current sound emitted by your speaker will be a little less, you can see the signal-to-noise ratio of the firing power amplifier, the signal-to-noise ratio of these amplifiers is very high; Try to be mindful when buying; If the power amplifier is not well grounded, then the current sound of the speaker is also relatively large, in this case, a copper wire can be connected to the screw of the power amplifier shell, and the other end is connected to the ground, so that the static electricity of the chassis will be introduced into the ground, which will greatly reduce the current sound of the speaker;

3. The interference of the front-end signal, this needs to be carefully eliminated by the pre-stage, first one after another, and then one by one, and then find the faulty machine to solve.

The connection of the signal input part should be as short as possible, and it should be plugged or soldered firmly. The signal line should be a three-core or four-core audio shielding wire, and when connected, the shielding layer at the end of the power amplifier should be grounded at one end; 2: After the above method is connected.

The speaker has current sound (also known as AC sound) This is not the problem of the internal power amplifier, most of the connection wires and high-frequency lines do not match the electroacoustics, and there are also environmental problems that will produce current sound in the dry place (but there is an external line input to pay attention to, and the sound is easy to generate in the preamplification).

1. The speaker will emit a large current sound, and there are three main reasons, one is caused by the failure of the speaker itself, the second is that the signal source is problematic, and the third is electromagnetic drying.

2. If the speaker itself fails, you can unplug all the input signal lines and other connecting wires of the audio, only connect the power cord and speaker wire, if the current sound disappears, it proves that there is no problem with the audio itself. If there is, it may be that the speaker itself is malfunctioning or that the strong electromagnetic is dry.

3. For the signal source, you can change other audio sources for input signal verification, and if there is a problem, you can replace it.

4. If the current sound caused by the failure of the speaker itself, it is necessary to find the cause, mostly due to the failure of the power filter capacitor.

5. The current sound caused by electromagnetic drying, you can add a power filter, which can effectively improve the current sound caused by electromagnetic drying.

6. There is a current sound, some may be a problem with the parts, and the small problems can be solved by yourself, but generally it may be the problem of the parts, and you need to find a professional repairer.

1. Power transformer interference.

Due to the magnetic leakage caused by the power supply of the multi-** speaker, the effect of installing a shielding cover for the transformer is very obvious when conditions permit, which can block the magnetic leakage to the greatest extent, and the shielding cover can only be made of iron materials. We should try to choose products with big brands and solid materials, and in addition, using external transformers is also a good solution.

2. Stray electromagnetic wave interference.

More commonly, speaker wires, crossovers, wireless devices, or computer hosts can be the source of interference. Keep the main speaker as far away from the computer as possible and reduce the number of peripheral wireless devices.

1. Turn off the microphone volume

Some speakers themselves do not have current sound,And the manufacturer also took this into account at the beginning of the design,If we turn on the speaker,At the same time, turn on the microphone volume,Then the microphone will automatically collect nearby sound,Interference with the speaker,And this is the most common current sound**。

This method is relatively simple, just turn down the volume of the microphone, or simply unplug the microphone, and the current sound will be weakened or disappear.

2. Replace the data cable

When we can hear the sizzling current through the speaker, it means that there may be electromagnetic interference nearby, such as the mobile phone is too close to the speaker, the microphone is too close to the speaker, etc., we can remove this kind of device first, and then replace it with a speaker cable with an "anti-interference ring".

You should know that the speaker needs to be connected to the mobile phone or computer, if there are some unknown interference around, such as mobile phone or microphone, etc., the speaker will be subject to electromagnetic interference when receiving the audio signal transmitted by the data line, and the speaker will make a sizzling sound.

If you want to eliminate this current sound, you need to remove the source of interference and then purchase a cable with an anti-interference ring to replace the original one.

Third, the chassis problem

In addition to the above two situations, there is also a situation caused by the computer power supply, there are many cases of this failure of desktop computers, some computer cases are iron shells, once there is leakage inside the case, then it will lead to leakage or static electricity in the outer chassis shell.

At this time, if the speaker is plugged into the computer host, the speaker will also be connected to the power, and there will be an extremely weak current transmitted to the speaker, and then make a sizzling sound, in addition to the use of anti-interference ring, replace the chassis shell, this problem can be completely solved.

Here are some things you can try to fix the problem:

1. Check if the power cord is damaged, if so, you can try to replace the power cord.

2. Check whether the connection method of the speaker is correct, if not, you can try to change the connection method.

3. Check whether there is any damaged part of the circuit of the speaker, and if there is, you can try to repair or replace the circuit.

4. Try replacing the receiver or audio source device to see if it solves the problem.

5. Try placing the speaker in a different position to see if it solves the problem.

6. If none of the above methods can solve the problem, it is recommended to send the speaker to a professional repair shop for repair.

When there is mechanical noise in the loudspeaker, it can be solved by adding a rubber shock absorbing layer between the transformer and the fixed plate. If there is thermal noise, it can be solved by replacing low-noise components, reducing the working load of components, or lowering the operating temperature. When electromagnetic interference causes the speaker to have current sound, it is necessary to keep the speaker as far away from the computer host as possible.

Mechanical noise is unique to active speakers, because the power transformer is in the process of operation, its alternating magnetic field causes the core to vibrate, which will produce mechanical noise. This phenomenon can be solved by adding a rubber shock absorber layer between the transformer and the fixing plate.

After the speaker potentiometer has been used for a long time, the contact between the metal brush and the diaphragm will be poor due to dust accumulation and abrasion, and noise will be generated when rotating. This thermal noise can be dealt with by replacing the low-noise components, reducing the working load of the components, or lowering the operating temperature.

Electromagnetic interference can be divided into power transformer interference and stray electromagnetic wave interference, in which power transformer interference can be solved by installing a shield, which can be made of ferrous materials. The stray electromagnetic interference can make the main speaker as far away from the computer host as possible under allowable conditions, and at the same time reduce the surrounding wireless equipment to solve.

Check whether the audio cable interface is plugged in correctly, connect with the green audio interface of the computer through the audio cable, and the pink connector in the sound card panel is usually connected to the microphone, and the wrong speaker will also emit a faint current sound. Check that the power supply is correct, the rated voltage is marked on the audio equipment, too high the supply voltage will cause the sound of current to be generated inside the speaker. If necessary, a voltage regulator can be used for power supply or voltage stabilization through electrical equipment.

Check whether the audio cable interface is plugged in correctly, connect with the green audio interface of the computer through the audio cable, and the pink connector in the sound card panel is usually connected to the microphone, and the wrong speaker will also emit a faint current sound.

Check that the power supply is correct, the rated voltage is marked on the audio equipment, too high the supply voltage will cause the sound of current to be generated inside the speaker. If necessary, a voltage regulator can be used for power supply or voltage stabilization through electrical equipment.

Electromagnetic interference can also cause the sound of electric current to be emitted by the speaker, so moving mobile phones, microwave ovens and other devices that are prone to electromagnetic transmission away from the sound can effectively prevent the generation of current sound.

Some speakers have noise phenomena such as "power supply" due to improper software settings. In this regard, you can take the following methods to solve the problem: open the "Control Panel", click "Sound & Audio" - > Manage Audio Devices" item to enter.