What Causes & How to Stop Buzzing in Your Car Speakers

In life, few things are as annoying as a buzzing sound overpowering your favorite song while driving your car. The noise can easily distract you as you go, and it will likely only get louder if you do not address it as soon as possible.

Fortunately for you, I’m here to lend you a helping hand. Below, I’ll do a deep dive into what might be causing the buzzing, as well as what you can do to fix it.

1. Sound Problems

Do you hear the buzzing all the time, or is it only prominent when you play bass-heavy tunes? If the latter is the case, your system’s sound settings may simply need a little adjusting.

The same could be true if the buzzing persists during songs with exceptionally high or low frequencies. Whatever the case, all you need to do is use your system’s equalizer to fix the problem.


Most modern car speaker systems come with an equalizer, which lets you individually adjust the volume of every sound component. They include bass, treble, and mid-frequencies.

Now, the best way to go about this task is to play a song during which the buzzing is particularly loud. Then, you can start fiddling with the components until you find a combination that works. In most cases, slightly lowering the bass volume should help, as well as changing the frequency levels.

It’s important to note that the source you use to play music should also be of high quality. If your music is overly compressed (like bootleg mp3 files), the equalizer simply won’t be able to process it properly. As a result, changing its settings won’t help.

So, to avoid buzzing as a cause of low-quality music, only play original CDs. Alternatively, connect your stereo to a streaming service of your choice and find your favorite songs that way. As long as the source is HQ, anything is fair game.

Lastly, if you aren’t sure how to access the equalizer or use it at all, it’s best to find your user manual. Alternatively, you can also take your vehicle to a car shop and ask for help there.

2. Damaged Speaker Cone

Another common cause for buzzing car speakers is a damaged speaker cone (also known as the diaphragm). This part of the speaker goes directly over the voice coil, and its vibrations actually produce the sound.

A damaged cone is a more serious issue than the first one I covered, but you can still solve it on your own. Your first step should be to check on the membrane by removing the speaker cover. It is usually held in place with screws or bolts, so a screwdriver should be enough to get it off.

Once you remove the cover, you’ll expose the cone. Get a good look at it, and even run your fingers across it to assess it for any cracks or damage. Just make sure you’re gentle, as the cone is quite soft.

From there, you’ll have a few solutions to try out.

Solution 1

If you notice that the cone is extremely dusty and dirty, you should clean it right away. The dust and debris are most likely causing the buzzing noise, and getting rid of them should fix the problem right up.

The key to cleaning the cone correctly is not to use an overly wet cloth. So, either remove the dirt with a dry cloth or use a slightly damp one. That way, you’ll get the dirt off without letting water enter the speakers.

If you use a damp cloth, make sure to let the cone dry before you cover it back up and tighten the screws once more.

Solution 2

In case you see or feel cracks or any other signs of damage on the cone, you’ll have to fill them up to ensure the buzzing stops. Now, the most effective materials to use in this case are either rubber cement or quality glue.

The key to getting things right is to apply a thin coat of sealant on the cracks with a small painting brush. So, you don’t want to overload the cracks, as that will likely cause even more sound issues. Instead, apply just enough to fill up the cracks, and let it dry for however long the package instructs.

To ensure the seal stays in place, you can also apply a coat of clear nail polish over it. Doing so will help cement the material and make the speakers’ sound clearer.

3. Low-Quality or Old Speakers

For an enjoyable listening experience, you need speakers that are at least relatively new and mid-range in terms of quality. Otherwise, you will probably hear rattling, vibrating, and clunking, along with the constant buzzing.

Namely, low-quality speakers usually aren’t able to handle songs with complex production. As a result, they’ll compress the sound and make it buzzy, which won’t change even if you adjust the equalizer.

The same is true for old speakers. Sadly, they aren’t meant to last forever, and the more you use them, the more worn out they become.


In both of these cases, investing in new and quality speakers is the way to go. It’s definitely a must if you really enjoy listening to music and having a great experience is important to you.

Now, since you’ll be buying a speaker anyway, you should splurge a little and get a high-quality model. Based on what type of music you like or what you usually use the speakers for, you can opt for different types.

For instance, a subwoofer is a good option if you like bass-heavy music. These speakers play bass, so getting one will take some pressure off the rest of your system.

On the other hand, you can invest in mid-range speakers, which cover middle frequencies. They will ensure that production details that would have otherwise been lost sound crisp.

Finally, you can also buy a tweeter speaker. As you might be able to guess, it plays sounds with the highest frequencies. Once again, which one you’ll get (if you don’t purchase them all) should depend on the type of sounds that usually cause the buzzing.

To Sum Up

Aside from being quite irritating, a buzzing car speaker can also become a big distraction as you drive. Thus, it is pivotal to address it as quickly as you can, and I hope this guide helps you along.

Most of the time, you’ll either need to adjust the speaker sound via your equalizer or do some cone maintenance. However, if your speaker is already too old or of low quality, investing in a better one will be your best bet.

If you’re unsure how to assess your car’s sound system — or if the buzzing persists no matter what you try, take your vehicle to a professional. They’ll take a look at the speakers and find the culprit in no time.

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