Car audio motor noise in car

Engine noise in the vehicles stereo speakers. The most common description of the noise is a whining sound that gets louder as the engines RPMs increase. This is very annoying and sometimes embarrassing. If your new automotive stereo system is causing unwanted engine noise the fix can be relatively simple. The normal cause of engine noise in the stereo system is the ground.

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Content:

• Car Audio Noise Troubleshooting
• Kelsey Salman
• Engine Noise in Car Stereo Speakers
• Subscribe to RSS
• Alternator Whine in Car Audio
• Get Rid/Stop Whining Noise in Car Speakers
• Hack17.Reduce Your Audio System s Noise
• Car Stereo Making Whining Noise: how do I stop it?
• How To Get Rid of Engine Noise in Car Stereo
• How to Get Rid of Engine Noise in Car Stereo

WATCH RELATED VIDEO: Car engine white noise sounds for sleep - ASMR 8 hours - relaxing video - sleep aid

Car Audio Noise Troubleshooting

Learn More. Engine noise in the form a high pitch whining that gets louder and higher in pitch as you accelerate is one of the most common problems with car audio systems. This noise can be introduced into a car audio system by a wide variety of things. Engine noise or alternator whine is one of the most annoying form of noise. It refers to the noise that sounds like a miniature siren introduced through the power and ground wires connected to your receiver. This is mainly caused by a big difference in electrical potential voltage between two points or by a ground connection that is less than ideal.

In either case, the noise will still be there, but the filters will most likely prevent it from getting into the head unit and cause the speakers to whine. Noise in the form of humming, buzzing, or whining can be introduced into a car audio system by a wide range of things.

So, if some kind of noise is still audible after installing the filters, then you need to further investigate the issue. It must be noted that most of the components and wires in a car audio system have the potential to introduce unwanted noise. For that reason, it can be really difficult to track down the culprit. Ground loops can happen when multiple devices are connected to a common ground via different paths.

The duplicate ground paths form the equivalent of a loop antenna. Multiple amplifiers, for example, can create ground loop problems, which can usually be solved by grounding each amplifier to the vehicle chassis with a separate wire. It must be noted that ground loop problems can also be caused by mobile devices.

This happens when you simultaneously connect your mobile device to your audio system via 3. Ground loop noise caused by mobile devices can be in the form of static, buzz, or whine that changes when you accelerate, and the easiest way to get rid of it is to use a ground loop isolator between the head unit and your mobile device.

Improper or loose grounding is the number one cause of problems in car audio systems. A bad ground can cause a wide range of problems in a car audio system including but not limited to: whining noise, blowing fuses, weak output, audio clipping, amp overheating, and a host of other issues. Essentially, what grounding does is that it completes the electrical circuit powering your equipment.

A loose or intermittent ground connection will put your audio gear at risk for distortion and noise. If the ground connection is loose, corroded, or rusted, tighten, clean, or relocate it as needed. The latter is not good enough for aftermarket head units because they are far more sensitive to energy than stock head units.

The same thing goes for amplifier grounding. On a side note, in order to assure efficient and smooth current flow, make sure the gauge of the ground wire matches the gauge of the power wire.

The amplifier might also drop into protect mode to prevent serious damage. Noise can also be introduced to a car stereo system when an amplifier is mounted to a conductive surface. That is why most car amplifiers come with plastic bushings to be snapped into the mounting feet. These bushings are meant to isolate the screw body from the amp chassis. Another great amp mounting technique is to bolt a wooden board to your vehicle, then secure the amplifier to it.

Just make sure the screws securing the amp are not long enough to go through the wooden board and make it to the chassis. Read our detailed article about amplifier gain and how to properly set it up for more information. A long ground wire is another potential cause of noise in car audio systems.

So, the shorter the ground wire the better. The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. You can calculate the resistance of a wire by multiplying its length by its diameter. So, a shorter wire will have less resistance. In other words, as a wire becomes longer, the amount of current it can pull decreases significantly. Therefore, it is recommended to use a shorter ground wire than power wire to ensure that it can ground as much current as is being put into the amp by the power wire.

If the noise is only heard when listening to the radio, it may be coming through the antenna. So, remove the head unit, unplug the antenna and check if the noise is still there. If removing the antenna gets rid of the noise, then the interference is likely being introduced somewhere along the run of the antenna cable. You may also need to install an antenna noise suppressor that plugs in between your antenna and the receiver.

Noise can be picked up by the RCA patch cables connecting your components. Then, turn on your system and engine. If the noise is gone, reconnect the cables to the amp, and disconnect them from your receiver. If you hear the noise, your patch cables are definitely picking it up. What you need to do is to inspect the RCA patch cables for any visible damage in the form of crimping, kinks, tear, or cuts in the insulation. Any wire with the smallest damage must be fixed or replaced.

If the wires are close to a power cable or close to an electronic device, you must re-route them. Speaker wires run through the cabin, and connect each speaker to the head unit or the amplifier. Noise can also come in through these wires. To test them, switch the engine off and unplug the speaker wires from the amp or head unit. Then start the car. To fix this problem, inspect the wires for cuts, breaks, frayed insulation or scrapes that expose the copper wire. If one of your speakers has bit the dust, you may hear either a crackling sound especially at high volume levels or no sound at all.

If your car speakers are crackling , popping, rattling, or produce unusual distortion or distinct buzzing at high volume levels, then you definitely need to check each speaker individually by using the balance and fader controls, or simply by visually inspecting each speaker and making sure there is nothing pressed up against it. Furthermore, a speaker that is not securely tightened to its housing will vibrate and sound horrible. To get rid of that disrupted sound, make sure the screws are well-tightened, or, as a last resort use foam baffles behind the speakers.

Last but not least, a bad amplifier , a faulty head unit, or any other defective components such as crossovers and equalizers can also be the source of noise.

You need to have a mechanic check your alternator and battery. It goes without saying that the best way to stop noise is to prevent it from occurring in the first place.

So, take all the time you need to sketch your car audio system out before you begin installation. The graphic representation of your audio system will help you avoid introducing ground loops and will serve as a road map for eliminating noise if it ever comes up.

Ground loops are very easy to create. They occur mainly when multiple devices are connected to a common ground via different paths. Loud buzz and annoying hum are some of the most common manifestations of ground loops. This is especially true when beefy amplifiers are used.

Powerful amps are notorious for drawing outrageous amounts of power. The more current flowing through the power wire, the bigger the electromagnetic field gets. Thus, if signal wires are close to this fluctuating electromagnetic field, the latter could impact the signal quality, causing data loss, or completely disrupt the signal, resulting in poor signal quality and bad signal to noise ratio.

This brings us to the next point, which is to always use high-quality and well-shielded signal wires to avoid possible interferences. Using well-shielded audio wires is mandatory in order to ensure maximum protection against induced noises by power cables and other sources of electromagnetic interference. The OEM ground wire usually makes a very poor ground due to a number of things including its length, small wire gauge, close proximity to other power wires, and unknown termination point.

The ground for the amplifier should be directed to a bare metal area of chassis of the vehicle, and the grounding point must be scraped clean of any paint or primer, so that the connection is bare metal to bare metal. Electric cables have a resistance per foot. In other words, the total length of the wire will affect the amount of resistance.

The longer the wire the greater its resistance. Noise filters are not as efficient. At best they will only reduce the noise, not completely eliminate it. The following steps must be carried out only while the engine is on; this is because engine noise is only produced when the engine is running. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Table of Contents. Worn out or loose speaker The next thing you need to check when you hear noise in your car audio system is the speakers.

S: Sometimes a speaker with minor damage can be easily fixed while other times it can mean having to replace the entire speaker. The best cure is prevention It goes without saying that the best way to stop noise is to prevent it from occurring in the first place. Avoid ground loops like a plague Ground loops are very easy to create.

S: This also holds true when signal wires are run too closely to strong electrical devices. So, what you want to do is to ground the head unit directly to the chassis or firewall. Keep amplifier power and ground wires as short as possible Electric cables have a resistance per foot. S: Larger cables have less resistance per foot than smaller cables. There are many different ways to adjust the gain controls of your amplifier including: Adjusting Gains by Ear: This is the fastest and easiest method for adjusting system gains.

Adjusting Gains by Multimeter: This is the most cost effective ways to adjust system gains with predictable accuracy. The downside, however, is that Oscilloscopes cost and arm and a leg making this option out of reach for most people.

Noise filters are not a real solution Noise filters are not as efficient. Turn the volume all the way down on the receiver. If the noise is gone, then it must have been produced before the amplifier.

With the RCA cables still unplugged, double check to make sure there are no shorts between the speaker leads and the chassis of the vehicle.

Kelsey Salman

It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I connected the speaker output from my car audio player directly to speakers working fine for me. But i have to connect it with another speakers which is connected with an amplifier.

Engine Noise in Car Stereo Speakers

Imagine you're going to your long-awaited holiday trip on your wheels, and the moment you've pressed the gas pedal, the stereo started sounding like it's in pain. If that's what is actually happening to you right now, then relax, you're not the only one with this hassle. Actually, this problem has successfully established itself among the most common problems in car stereos. So, what are we going to do about that? There can be a ton of reasons why your car stereo making whining noise so badly. But like the disease, you need to know the reasons here before you jump to a solution. So, let's put some light on that first. The easiest way to understand if improper grounding is causing the noise or not is by looking for a buzz and hiss from your stereo or not.

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The biggest offender of noise in the car audio environment is alternator whine. Alternator whine is caused by a difference in electrical potential voltage between two points. It's usually caused by a ground connection that is less than ideal. The main culprits are the amp, the head unit and any intermediate components such as crossovers and equalizers.

Alternator Whine in Car Audio

So, your car speakers are producing static noise and crackling sounds? There is nothing more annoying than expecting to chill to crisp and satisfying music from your car stereo only to hear static screeching from your speakers. Sound is sent to your car speakers using wires with electrical signals , which can be easily distorted by other signals from electrical devices like power lines. The issue is that anything that is capable of generating an electrical field can cause unwanted noise into a car audio system. You would be amazed at the numerous things in your car that can generate electrical fields, ranging from the windshield wiper motor to alternator to the actual sound components of your sound system.

Get Rid/Stop Whining Noise in Car Speakers

There are ways to reduce or eliminate the buzzing and high-frequency noise that the engine adds to your in-car audio. Despite the fact that we spend so much of our time listening to music in our cars, the automobile is a fairly hostile environment for someone seeking audio perfection. The alternator of the car and the electrical pulses from the spark plugs both create oscillating electronic currents in the audio signal. Really, any moving electrical part can create magnetic waves that show up in electrical wires as audible noise. This is why cables are shielded. The power from the 12V car battery that powers your car computer fluctuates from V and includes many other little electrical oscillations from the car. While the battery can still successfully power your computer, the little fluctuations pass through the computer and show up in the analog audio signal that it puts out. At other times, the car's electrical noise is picked up directly by audio wires that act as a sort of antenna.

Hack17.Reduce Your Audio System s Noise

To get rid of engine noise in a car stereo, all ground wires must have a correct gauge and secure connection to the chassis and also signal and power cables cannot run together to the amplifier. If wires are connected correctly, and you still can hear the engine noise, you will need to install ground loop isolators or noise filters. As an Amazon Associate, ImproveCarAudio will receive a small commission from qualifying purchases made through the links in this article. After that, I will show you all the remedies for these causes so that you can enjoy crystal clear sound without frustration.

Car Stereo Making Whining Noise: how do I stop it?

RELATED VIDEO: get rid of buzzing and engine noise

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How To Get Rid of Engine Noise in Car Stereo

Learn More. Engine noise in the form a high pitch whining that gets louder and higher in pitch as you accelerate is one of the most common problems with car audio systems. This noise can be introduced into a car audio system by a wide variety of things. Engine noise or alternator whine is one of the most annoying form of noise. It refers to the noise that sounds like a miniature siren introduced through the power and ground wires connected to your receiver. This is mainly caused by a big difference in electrical potential voltage between two points or by a ground connection that is less than ideal. In either case, the noise will still be there, but the filters will most likely prevent it from getting into the head unit and cause the speakers to whine.

How to Get Rid of Engine Noise in Car Stereo

Your car stereo is a constant companion while traveling about. A car stereo making whining noise means you have to turn your radio off or live with annoyance. The sound of screeching on your drive to work is no way to start the day. If this sounds like your situation, you need a solution to this problem, and it is easier than you think.