How To Tell If Subwoofer Is Blown - 7 Damaging Factors

If you’re unknown to car audio, then the first question that may come to mind is: how do I know if my subwoofer is blown? This article will answer this and many other questions about subwoofers. Here we go! Let’s Start…

1. Is Your Sound Distorted

How To Tell If Subwoofer Is Blown? by speakerjournal.com

If so, it could be a sign of a blown speaker. A good test for this is by using an FM radio station on low volume and playing some bass-heavy music. If the distortion occurs only when the bass plays, then there’s a problem with your speakers.

2. Does Your Subwoofer Smell Like It's Burning

If so, then there’s a good chance that it is blown. The smell of burning comes from electrical resistance due to the depletion of protective coating on wire coils.

To Summarize:

If your speakers distorted sound when playing low frequencies and smell like they’re burning, you most likely have a blown subwoofer sound. If this happens, stop playing any music from the speakers and have them checked by a professional.

3. Is It Making Strange Noises

Probably the most common sign that your subwoofer is blown or beginning to go out is unusual sound distortion.

One tell-tale sign that you have a blown subwoofer is if there’s rattling coming from inside. This means that something deep within its structure has come loose and needs to be fixed immediately.

4. Is It Making Any Popping Or Snapping Sounds

A common sign of a blown subwoofer is when you hear popping and snapping sounds while playing your music.

One more thing worth mentioning- if you have an amplifier, then this could be the case that there’s some sort of short circuit in one of the speaker wires. If not taken care of immediately, this can cause severe damage to your amplifier.

To Summarize:

If you have a popping or snapping sound coming from the speakers when playing bass-heavy music, then you most likely have a blown sub. If this happens, stop playing any music from the speakers and have them checked by a professional.

Also Read: How To Fix Blown Speakers – Methods & Tips

5. Does It Look Like It's About to explode

The final sign that your subwoofer is blown or beginning to go out is when you see smoke coming from the back.

If this happens, immediately turn off all audio sources and disconnect the wire harnesses of the speakers. This will prevent any severe damage to other components in your car audio system.

To Summarize:

If you have smoke coming from your subwoofer, turn it off immediately to prevent any severe damage. If this happens, stop playing any music from the speakers and have them checked by a professional.

6. Too Much Power

If you have a subwoofer with too much power, this is another possible cause of the problem.

In order to avoid damage to your system or speakers, it’s important not to provide them with more power than they can handle. If the volume goes very high and there are no other problems with sound quality- then most likely you’ve got a blown subwoofer.

There are multiple ways to determine if your subwoofers are squealing, rattling or making other unusual noises. You should always check if there’s any damage to the speakers before playing your music again at full volume.

7. Test The Cone

The first thing you should do to determine if your partially blown subwoofer or not is tests the cone.

To do this, put on some bass-heavy music and gently press on one side of the speaker’s grill while listening for any strange sounds. This will help you figure out which speakers are working correctly and which ones are blown.

Gritty Movement

When a subwoofer cone is stuck in place by melted wax and dust build-up, this usually occurs due to extreme heat.

A Wobbly Cone

How To Tell If Subwoofer Is Blown? by speakerjournal.com

If the speaker cones wobble from side to side, this means that they’re not correctly attached and need replacement.

Scratching Sounds

If you hear this kind of noise, it means that there’s something stuck deep inside the speaker and needs to be taken care of immediately.

Use A Multimeter

How To Tell If Subwoofer Is Blown? by speakerjournal.com

In order to determine which speaker is blown, you should use a multimeter.

First of all, turn off the amplifier and disconnect its wire harnesses from your car or audio system.

Then connect one side of the probes with each other and another probe on the metal parts on the back panel- this will help if there’s any short circuit in the wire harnesses.

If there’s a short circuit in one of the speaker wires, you’ll see readings on your multimeter.

Still, if there’s no short circuit- this means that the speaker is blown.

Here Is What To Do If You Know Your Subwoofer Has Blown

How To Tell If Subwoofer Is Blown? by speakerjournal.com

If you have a multimeter, then this is the easiest way to determine which speaker has gone bad.

In order to fix it, just buy another woofer and replace the blown one with a new one. In case of smoke coming from your speakers, don’t turn them on again until they’ve been checked by a professional or replaced completely blown.

If you don’t want to do the process yourself, ask a professional car audio system installer for help. He’ll be able to replace your blown subwoofer for you fast and without any complications.

A Crackling Sound

If you had heard the crackling sound; it means there’s a loose connection in the speaker cone, and it needs to be fixed as soon as possible.

No Sound

How To Tell If Subwoofer Is Blown? by speakerjournal.com

This usually happens if the speaker wire is disconnected from the amplifier.

Shaking Or Trembling

How To Tell If Subwoofer Is Blown? by speakerjournal.com

If your subwoofer is shaking, there’s likely something stuck in the cone, and it needs to be fixed by a professional.

Result: if your subwoofer has one or more of these signs, it’s blown. If you turn them on and they still aren’t working, then stop playing any music from the speakers and have a professional check them out.

FAQ'S

What is the best time to replace a blown subwoofer?

It’s ideal to have them checked by a professional as soon as possible. If you have a multimeter, then it’ll be easier for you to determine which speaker has gone wrong.

How do I know if my subwoofer is blown?

There are many signs that let you know if your subwoofer has gone wrong. For example, it may start rattling, start smoking or shaking.

What do I need to check if my subwoofer is blown?

Before checking your speakers and amp- which you can do using a multimeter- turn off the amplifier and disconnect it from your car or audio system.

In case of smoke coming from your speakers, don’t turn them on again until they’ve been checked by a professional or replaced completely.

Can blown subwoofers be fixed?

Taking the subwoofer out of your car, repairing any damaged components, and glueing/wiring it back together will fix it. Depending on the problem, this process can vary from being easy to being very challenging.