How to Fix a Blown Speaker in Car

How to Fix a Blown Speaker in a Car

When the car’s speaker turns mute, it may surprise some or some may not as they noticed distortion from the past days. So it’s obvious. The speakers are blown out.

However, there are instances that you can fix distortion by installing replacement on some components of the speaker. But there would be a story that tells you there’s no need to check the speakers. 

It’s when you smell the air of something that got burned. It happens because of several reasons.

It could have happened because of the power surge that occurs on the batteries, ruptured cone, or faulty voice coil. These issues can be fixed without hiring an expert.

You can make the solution by yourself. It’s affordable and efficient in making your speakers work again. 

Checking the Cause of the Damage on the Speaker  

To fix the issues on your car’s speaker, you have to study the cause of it all. You have to find a particular part that caused the damage.

So before proceeding to repair, you have to diagnose first, and here are the steps that you can follow. 

1. You have to listen to the songs that you frequently listen to, so it will be easy to spot the difference from the normal sound. Don’t play it too loud, so the distortion will be sorted out. 

You should detect if there’s any unusual pitch. If you know the song, you can tell the high pitch from something that seems not normal, low-frequency range, or no sound at all.

2. If it’s still impossible for you to pinpoint which speaker or its part creates the problem, you can play the song on your phone or other devices for comparison. You can tell the quality of the sound apart if you play the song in different sources.

3. When checking the speakers, you can alternately let it play with the help of its audio system control. You can limit the confusion by doing this, and you can easily identify the speakers that rattle or the one that doesn’t give some sounds.

4. Another issue a speaker can have is that when it fails to give the expected sound range. When listening to the sound for a short time doesn’t help, play each speaker for hours and try to figure out if there’s something wrong.

5. You need to open the grille if the very first sign is the smell of burnt part. You have to check if the voice coil got loose. 

If it does, the part that makes it stay in place melted. Take off the door panel’s covering to show the speaker. 

Take a look at the cone, whether it has the freedom to move or not. It should be firm and won’t tend to move. Its firmness would cause the burning. 

Fixing a Blown Speaker in a Car

Things You Need to Fix a Blow Speaker of your Car

Compressed air cleaner


Knife or plastic scraper

Piece of soft cloth



Screwdriver or ratchet

Thread and needle

Necessary Steps

1. The power should be off for you to begin the fixing. The audio system should also be off as you only need to put your attention on the speakers.

It can create dangerous electrical faults when you examine the speakers with the battery.

2. Disconnect the speaker from the car as well as the door panel and grille. You might also need to remove window cranks, and it depends on the way of hooking up the speaker. 

In removing the screws, you can use a screwdriver or a ratchet. Loosen up the cloth covering by starting carefully from the edges. There are some speakers with a protective hood, so you have to detach it.

3. You can easily work on the speakers if you’ve disconnected the wirings. Electrical shortcuts can happen upon installation with the wires on.

You have to put the wires back in the same way as before.

4. Make piercings on the nose by using a knife so you can start cutting it with scissors. Cut the form carefully.

A speaker with a metallic plate on the basket has screws that need to be removed first before piecing the foam. Some have a mesh cover, so you have to pull it with vigor to remove.

5. Use the sandpaper to get rid of the glue that has remained on the surface. Avoid using a knife as it can leave scratches.

It’s not advisable to uses something that is with metallic parts as some pieces of it may stick on the magnet.

6. A piece of cloth can wipe off the dust on the speaker. You can through the edges and work on the center too. If the speaker has been inside the car for a long time, expect the not-so-small amount of dust.

A compressed air duster is great for cleaning it up. If you don’t have one on hand, you can have a brush to dust the speaker’s interior.

7. It’s time to remove the cone and the old voice coil.  You have to see if the cause of the malfunction is a melted voice coil. This happening creates a space where the sound can escape. 

Nudge the cone with a knife so you can take it out. It will together remove the spider, voice coil, and cone. 

Handle it with care so you can’t create any damage to the frame. Take out the wirings from the coil so you can dust the space.

8. You can add the new voice coil so you can replace the old one. Before the fix, you have to put glue on the new one. 

You have to place the spider around it. Drying the glue should be based on the instruction of the manufacturer, and it can take a whole day.

9. Apply glue over the new cone before fixing the voice coil. Set it to dry.

Be aware that the voice coil can melt, and the rattling sound comes up from the cone getting ripped. If it happens, it’s another thing you need to fix. 

10. A ripped cone doesn’t need a replacement at all, but you can fix it yourself. You can start by threading a needle and put a knot on its end.

Insert the needle on the cone for about a quarter-inch, and you have to start on the outer surface. Put it around with tightness, and you can do it twice. 

Stitches make the cone to have a grip on the ribbing. It will allow the speakers to stand still no matter what decibels of the sound there is. It can withstand ripping.

Apply glue on the cone to strengthen it as it dries.

11. Applying glue on the new surround is a part of the fixing process. A foam surround can easily be attached to it, and it won’t limit the cone’s movement. 

The foam also does a great job of maintaining quality sound rather than fabric and masking tape. 

Putting the Speakers on the Trunk

12. Put and fix the newly assembled speakers on the trunk. Connect the old wirings to the new voice coil. 

You have to make sure there’s no damage as it can cause the explosion of the speaker.

13. Fix the screws properly, so the speaker is intact in the proper place after you mounted it. Give adequate support to its position as it remains stable.

14. Once you mounted it, you can examine your workmanship by playing the music in low sound first; then, you can turn it up. You have to listen to the sound to check the improvement.

If the sound went well, you can go on with attaching the grills and fix all the screws. 

Important Tips

You have to make sure that you only need to fix the speaker rather than replacing it with a new one. In this case, it might blow up even though you replaced it with the new piece.

It will happen as the stereo overpowers the speaker. The speaker should be able to get along with the output.

Check the wirings that go along from the speaker to the stereo if the cause of the blowing out is the wirings. You have to arrange then in a way that there’s no obstruction on the route and no tangling. 

When a vintage speaker blows, you can re-cone it. But with the basic type, you better replace it with a new one. 

Thinking Over Important Things

The steps on fixing a blown speaker in a car may appear easy. But you need enough skills to do it. You have to do each step in the right way. 

You have to be careful not to cause further damage. Electrical faults on the coil’s wiring can happen. 

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