Is it normal for a single car speaker to have constant abnormal noise?
3 Answers
It is not normal for a single car speaker to have constant abnormal noise, and it requires timely inspection and repair. Amplifier equipment malfunction: It is likely due to poor contact (loose connection), resulting in a buzzing noise from the car audio. Simply locate the loose connection and secure it properly. Fault caused by ground potential difference: If the buzzing noise from the audio increases with the throttle, the issue is most likely with the grounding. Performing a proper ground connection for the amplifier is relatively complex, and since it involves many integrated circuits, incorrect wiring may pose certain safety hazards. Speaker product quality issue: If the speaker has quality problems, it is necessary to negotiate with the supplier. Since this involves the design and installation of the audio system, it is recommended to leave it to professionals for handling.
This situation is absolutely abnormal. I've repaired many similar cases. A continuously sounding horn alone usually indicates an internal fault—either a torn diaphragm causing a raspy sound or stuck contacts leading to constant power flow. Just the other day, I worked on an old Mercedes where an aged seal allowed water ingress, corroding the copper strips and causing a short circuit. You can try lightly tapping the horn casing; if the abnormal noise stops, it means the diaphragm is loose, but this is only a temporary fix. I recommend not delaying—horns are safety components, and not being able to honk on the road can lead to accidents. Quickly remove and check the horn connector for oxidation and inspect the wiring harness for any exposed wires grounding out. If it's a model where the relay controls both horns simultaneously, a failure in one can affect the other, leaving you with both horns dead—quite an awkward situation. The most reliable method is to use a multimeter at a repair shop to measure the coil resistance. Spending a hundred or so on a new one is more worthwhile than struggling with it for hours.
As a frequent long-distance driver, I'm particularly sensitive to abnormal noises. A single horn randomly sounding is definitely problematic. Last time, the right horn in my car made a buzzing sound, and it turned out to be sand particles stuck in the armature after being washed with a high-pressure water gun. This situation needs immediate attention, especially during the rainy season when waterproofing is crucial. A simple self-check method: Open the hood, locate the horn position, and unplug the problematic horn to test. If the abnormal noise disappears, it's a horn body failure; if it persists, check the steering wheel clock spring or relay. I remember a friend last year who didn't repair it in time, which eventually caused the entire horn circuit to burn out, not to mention doubling the repair cost, and the horn sometimes intermittently lost sound, which was particularly dangerous when overtaking. Now, during every maintenance, I ask the mechanic to clean the horn contacts as a preventive measure—prevention is better than cure.
