What is the reason why the sound of a modern car is not loud?

1.Loose sealing is susceptible to moisture: Although the inside of the horn is airtight, if the seal is not tight, it enters the fog or there is water vapor in the air of the internal space when washing the car.

Water vapor can easily cause the contacts to become damp and not work properly.

2.Solenoid coils.

Poor terminal contact: Some horns have magnet wire for solenoid coils inside.

The terminal joint is connected by aluminum metal rivet crimping, non-reliable soldering connection, if the insulating paint on the enameled wire at the end is not clean or the rivet crimping is not reliable, it is easy to produce a virtual connection fault, resulting in poor horn work. This kind of failure is the quality of the horn, which cannot be repaired, and can only be replaced with new parts.

3.Contact ablation: If the horn is pressed for a long time, it is easy to cause the horn contact to be ablated and the impedance will be generated, the current flowing through the electromagnetic coil will be weakened, and the electromagnetic attraction will not be able to attract the armature to drive the diaphragm to vibrate normally, resulting in hoarse or even no sound.

However, when the horn is constantly pressed, if the instantaneous strong current passes through the impedance, it can still work normally, so it will be good and bad.

Then it depends on whether your audio is directly not loud or you feel that the sound quality is not good,If it is directly not loud, then you have to remove it and check that it is bad, and then you have to replace it if you feel that the sound quality is not good,

1. Water vapor entered. The inside of the horn is sealed, but if the seal is not tight, the water vapor entering the car can easily cause the contacts to get damp and not work properly.

2. Poor contact. Poor contact of solenoid coil terminals Some solenoid coil enameled wire terminal joints inside the horn are connected by aluminum metal, if the insulating paint on the enameled wire at the end is not clean, or the rivet is not crimped firmly, it is easy to occur false connection, resulting in the horn does not sound. This kind of failure can only be replaced, not repaired.

Check whether the power supply of the CD player is normal, the indicator light should be on when there is a power supply, and the CD navel should be able to switch on and off normally. If there is no electricity, check the power supply, that is, the fuse box and the line. If there is electricity, consider whether it is a modified audio, if so, check the modified fuse, if not, check whether the audio output cable is off.

Consider whether there is something wrong with the horn. Auto Audio A radio and playback device designed to reduce the boredom of the driver and occupants during travel.

The earliest use was the automobile AM radio, later the AM radio, tape player, CD player and compatible DCC, DAT digital audio. Now the car audio has reached a high standard in terms of timbre, operation and anti-vibration, etc., which can cope with the bumpy road of the car and ensure the stability of the performance and the perfect sound quality. In order to help car enthusiasts solve the problems related to "what to do if there is no sound in the car audio", the solutions related to "what to do if the car audio is not sound" have been sorted out through the Internet.

Solution 1: Check whether the power supply of the CD player is normal, the indicator light should be on when there is a power supply, and the CD nairoom should be able to switch on and off normally. If there is electricity, consider whether it is a modified audio, and if so, check the modified fuse.

If not, check to see if the audio output cable is detached. Solution 2: It is advisable to check the line and insurance.

Solution 3: It depends on whether your car audio is installed, and whether all output speakers are normal. Solution 4:

See the rear connector of the car stereo, 90 percent appear there. Solution 5: Consider whether there is a problem with the speaker.

The maintenance of car audio should not only check the fault of the audio itself, but also comprehensively check the circuit of the vehicle itself to eliminate the impact of the vehicle on the audio. There was a car stereo where the radio and cassette parts were working fine, but the CD was not. Open the host to check and find that the CD control system is burned; Continued to check the CD connection cables and found that 6 of the 11 lines were short-circuited to each other; It was found that the root cause of the failure was that the CD line was penetrated when the fixing screws of the rubber door edge strip were installed, resulting in a short circuit.

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Hello, happy with your question. All the stereos on the car are not loud, and it is generally a problem with the power amplifier. Repair plan 1

Check the power supply and negative pole on the power amplifier, the power supply is normal, the negative pole is normal, and the power supply is also normal when the ignition switch is turned on, then replace the power amplifier. 2.In most models, the amplifier is integrated with the radio.

In some models, the amplifier and radio are separated. For example, Audi. Land rover.

The amplifiers are in the rear trunk. 3.If only one speaker doesn't sound.

It would be good to replace the center of the steering wheel shaft with a spiral cable, but the ** network is only a few dozen yuan, and the maintenance plant charges hundreds.

It is possible that the horn plug is loose.

It may be that the wire is off or the speaker wire is on the iron, etc., anyway, there are many reasons, and if you have time, you can open a professional store to have a look.

Loose horn plug terminals, horn relay contact ablation, poor contact of horn switch at steering wheel, etc. However, in many horn failures, especially in winter, the problem is the failure of the horn itself.

If there is no sound in the car stereo, it is generally a problem with the line connection. You can check whether the power supply of the CD player is normal, if the indicator light is on, it means that there is a power supply, the CD cabin can be switched on and off normally, then you have to repair the speaker, if there is no electricity, then it is a line problem, and you can reconnect the line.

If the battery is insufficient, check the power system. Turn on the headlight switch, the headlamp is not lit or dim, start the engine at this time, slightly increase the throttle, if the headlight light is normal, the horn sounds, it is the battery storage is insufficient.

Precautions for car audio modification.

The first thing you need to pay attention to is the circuit problem, when modifying and repairing the car audio, you must go to the car modification shop with professional experience, because the unprofessional modification shop is likely to destroy the original car circuit in the modification process, so that not only the sound effect has not been improved, but also may affect the vehicle warranty and a series of after-sales service.

Therefore, when wiring, it is necessary to lay out the power cable, audio cable, and signal line separately, and shield and protect the lines to be foolproof.

There are many reasons why the speaker doesn't sound – no power (power supply issues), broken speakers, etc. So you can only find a professional master to check it on site.

Hello! Reasons why the speaker does not sound: 1. The power supply is not connected, turn on the power supply and turn on the power switch.

2. If the audio source is not input or the connection is not connected, ensure that the audio source is normally input to the audio. 3. Turn off the volume knob and open the volume knob to the appropriate position. 4. If the speaker connection cable is broken, reconnect the speaker connection cable.

5. If the audio is broken, find a professional to repair the audio.

1. Poor contact with sockets and signal wires. Check that the speaker is energized and that the signal lines are in good contact.

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

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

4. As for other faults, there are other problems such as bad contact of power amplifier volume potentiometer, unbalanced left and right channels, too frequent protection function, poor contact of the rear panel working transfer switch and signal socket, in short, power amplifier is a kind of electrical equipment that is more prone to failure in the audio system.

Summary. In this case, you should first see if the recorder host can be turned on, whether the screen is lit, the screen is not lit, and check the safety and the rear line. The radio is turned on normally, which is caused by the damage of the speaker line, the problem of the speaker itself and the power amplifier module inside the tape recorder, which requires unplugging the plug behind the tape recorder and measuring the resistance value of the speaker, which is normal at 4 6 ohms.

Beyond this range, you will need to replace the horn and check the door position cables. These places are good, indicating that the recorder host is broken, just find the master of automotive electronics to repair it, the general charge for repairing the host is 200 yuan, and no money will be charged if it is not repaired.

Hello. Sometimes the car doesn't ring overnight, and the next day it rings, and sometimes it doesn't work.

In this case, you should first see if the recorder host can be turned on, whether the calendar screen is lit, the screen is not lit, and check the safety and the rear line. The radio is often turned on, it is caused by the damage of the speaker line, the problem of the speaker itself and the appearance of the power amplifier module inside the tape recorder, this kind of emotional situation needs to unplug the rear of the tape recorder, and measure the resistance value of the horn, which is normal at 4 6 ohms. Beyond this range, you will need to replace the horn and check the door position cables.

These places are good, indicating that the recorder host is broken, just find the master of automotive electronics to repair it, the general charge for repairing the host is 200 yuan, and no money will be charged if it is not repaired.

According to what I said, check first to see if the display screen can be lit, it's normal, but if there is no sound, it may be that the individual horns are damaged and the power amplifier is protected by the head of the local mode, measure the resistance value of the speaker, and replace the speaker with a new one if the range is exceeded.

The screens are all good, and the sound lines are also good.

It's all checked.

It's just that the host didn't check.

That is the problem of the host, just replace the power leakage amplifier module inside the host to return to the beam pin, the power amplifier module due to poor heat dissipation or other problems caused by the unstable work of the slag will occur this fault.

The reason why the car horn sometimes rings and sometimes does not sound is that the contact contact of the horn switch is poor, so this situation happens from time to time, and some of them are the problems of the horn itself. ”