5 Signs of a Blown Subwoofer [Updated]

If you are facing an awkward sound from your subwoofer, and wondering if the subwoofer is blown, then you have landed on the right blog post.

In this article, we have compiled a complete step-by-step guide that you can follow to identify a blown subwoofer quickly.

That being said, let’s jump right into the details, and check out the matter.

5 Signs of a Blown Subwoofer

Identifying a blown subwoofer is a very crucial process, and it takes a lot of testing before you can reach the result that the subwoofer is blown. Poor settings or other devices can also make you believe that the subwoofer is blown.

Thus, we have compiled this complete step-by-step guide, in which we have put together 4 different signs of a blown subwoofer.

You need to follow the testing procedure one by one to conclude that the subwoofer is blown.

Below, we have provided you with the 5 most obvious signs that your subwoofer is blown and won’t work anymore.

1. Physical Damage

The most obvious sign of a blown subwoofer that you can check is the physical damage. When a subwoofer gets blown, it may get the sign of internal damage in the coil on the outside. There would be black stains or burn marks on the subwoofer, which indicates that the subwoofer is blown.

Apart from the burning marks, your subwoofer can also have a variety of other physical damage signs. For instance, you can have something hanging-in there.

2. No Sound

When a subwoofer gets blown, there are two different things that it can cause. Firstly, it can cause no sound. When the subwoofer gets blown, there would be no sound coming from the subwoofer.

In case you are thinking that the subwoofer is not producing any sound, then it means that the subwoofer is being blown.

A blown subwoofer is very unlikely to produce any sort of sound in most scenarios. So, if your subwoofer is not producing any sound at all, then it means that the coil has been blown.

3. Distorted Sound

Apart from no sound, a blown subwoofer can also cause distorted sound issues. The bass produced by a blown subwoofer would be distorted with a lot of noise, which makes it difficult to properly hear the dialogue.

There can also be rattling, and uneven sound in the blown subwoofer, making it extremely hard to enjoy the bass.

If you are facing distorted sound on your subwoofer, then it means that the subwoofer’s coil has been blown.

4. Cone Movement

Another quick sign that you may have about the blown subwoofer is the cone movement. A blown subwoofer would have different cone movement than a subwoofer which is 100% okay.

The cone movement of the subwoofer can tell you whether the subwoofer is alright or not.

Here are the Steps for Checking the Cone Movement for the Blown Subwoofer:

  • Take Out the subwoofer.
  • With both of your hands, gently press the cones of the subwoofer.
  • If there is mild movement in the cone, no movement, or more movement than usual, then the subwoofer is damaged.

5. Checking Resistance

Last not least, if none of the above-provided methods are working for you, you can check out the blown subwoofer by using a multimeter.

It is the easiest and most convenient method of testing the subwoofer. All you need to have is a multimeter to check out the resistance of the subwoofer to get to a point of whether the subwoofer is in working condition or not.

Here are the Steps for Checking the Resistance of the Subwoofer:

  • First of all, you need to separate the subwoofer from the enclosure.
  • Set the multimeter for checking the resistance (OHM).
  • With the multimeter, attach the positive end of the multimeter to the positive end of the subwoofer, and then attach the negative end of the subwoofer to the negative side of the subwoofer.
  • In case, there is no resistance or low resistance, then it means that the subwoofer is blown.

What Does a Blown Subwoofer Sound Like?

Well, it depends. There are times when a blown subwoofer does not work, and then there are times when a blown subwoofer makes a distorted sound.

When a blown subwoofer is producing sound, it would produce a rattling sound that has a lot of distraction, and noise.

In short, a blown subwoofer would produce a crappy sound that would seriously downgrade the quality of the sound. Hence, it is not advisable to use a blown subwoofer for sound.

Why Does My Subwoofer Sound Distorted?

The subwoofer can produce a distorted sound when the subwoofer’s coil has been blown. In case your subwoofer is producing sound with distortion, it means that the subwoofer is blown, and needs fixing.

In most cases, you can fix a blown subwoofer, and there are times when you need to replace the subwoofer.

Does a Blown Subwoofer Still Work?

Sometimes a blown subwoofer would still work, and sometimes the blown subwoofer does not work. The majority of the time, a blown subwoofer would work and produce a rattling sound.

That distorted sound produced by the blown subwoofer is not audible, and you would have a very hard time listening to the dialogues, or the bass.

Moreover, a blown subwoofer can also cause severe damage to your other appliances. Thus, it is not recommended to use a subwoofer that has been blown.

Subwoofer Blown Voice Coil Symptoms

A blown subwoofer voice coil would produce a distorted sound that has a lot of noise. The sound produced by a blown subwoofer coil would have a very noisy sound that has a barely audible sound. 

Moreover, you can also have physical damage on your subwoofer, which indicates that the subwoofer coil has been damaged.

Lastly, a blown subwoofer can also cause the sound to vanish. So, you can also face no sound issue on a blown voice coil.

How to Tell if a Home Theater Subwoofer is Blown?

There are three main signs of a blown home theater subwoofer. A blown subwoofer coil can cause physical damage, no sound, or distorted sound.

If you are facing any of the above-given issues, then the home theater subwoofer is blown, and you either need to fix it or buy a new one.

Frequently Asked Questions (FAQs)

What are the Signs of a Blown Subwoofer?

Various signs indicate a blown subwoofer. These signs include physical damage, no sound, distorted sound, etc. Above, we have compiled a complete guide, in which we have put together all the signs of a blown subwoofer in great detail.

What Happens When a Subwoofer is Blown?

When the subwoofer is blown, it may not produce any sound at all, and if it produces any sound, it would be too distorted to be audible.

Do Blown Subwoofers Still Work?

Well it depends, there are times when the blown subwoofer works with distorted sound, and then there are times when a blown subwoofer does not produce any sound at all.

Conclusion

If you are not having the best sound performance from your subwoofer, and you are wondering if the subwoofer is blown or not.

In this guide, we have compiled a complete list of the signs that you can check out whether your subwoofer works or not.

So, you can easily fix the blown subwoofer or buy a new one to improve the sound performance of your system.

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