How to fix a Blown Subwoofer in 2023

If you’re like me, you love your music. And if you’re like me, you also love your car. So when the two come together and your subwoofer blows, it’s a pretty big deal. It is also essential for any home theater system, and when they blow it can be a real pain.

This blog post will show you how to fix a blown subwoofer using just a few simple tools. We’ll also give you some tips on how to prevent your subwoofer from blowing in the first place.

So if your subwoofer is giving you trouble, read on and we’ll help you get it back up and running in no time!

Causes of a Blown Subwoofer

There are a few different things that can cause your subwoofer to blow. Let’s discuss it  below:


The most common cause of a blown subwoofer is pushing too much power to it. When this happens, the bass can’t handle what’s being put through and blows quickly–which means you’ll need an amplifier that’s capable enough for your speakers or else they will also start blowing after only brief periods of time!


The most common cause of a blown subwoofer is when your amplifier clips. It’s sending a distorted signal which can lead to overheating and eventually failure for some drivers in particular, like those under heavy bass load-bearing capacity!

Thermal Shutdown:

The most common cause of a subwoofer blowing up is when it overheats. To prevent this from happening, make sure you have adequate ventilation in your space and don’t place anything on top or near where the speaker will be placed for maximum cooling effect!

Mechanical Damage:

While this is not the most common cause of a blown subwoofer, it can still happen. If you hit your speakers too hard or rub against their terminals with something metal like keys in between sessions-the voice coil could come into contact with magnets causing an electrical short which will result in hearing distortion as well!


How to fix a Blown Subwoofer? The most common cause of a blown subwoofer is pushing too much power to it, when your amplifier clips when it overheats, hit your speakers too hard, or rubs against their terminals.


How to Fix a Blown Subwoofer:

how to fix blown subwoofer sizeTo fix the blown subwoofer, you will need some supplies that can be easily found in any hardware store. They are as follows:

  • A screwdriver
  • Soldering iron
  • Air Compressor
  • Multimeter
  • Putty knife
  • Glue

Once you have gathered all the necessary supplies, follow the steps below to fix your blown subwoofer.

Step 1- Evaluate the Voice Coil

Evaluate the Voice Coil

When you are looking at your subwoofer, it is important to be thorough about what parts of the speaker might cause problems. One issue could arise with the voice coil and so before starting any repairs or adjustments on this part of their design make sure there isn’t anything wrong by checking its condition first!

With a multimeter, you can quickly and easily measure the resistance of your voice coil.

If you have a multimeter, connect the speaker terminals and see what happens. If there is any resistance on your meter then that means something in circuit with an electric current may be causing damage to it, but if nothing moves at all – this could mean your voice coil has been destroyed by overheating or some other issue!

Step 2- Look at the Speaker Cone

Speaker Cone

Once you’ve inspected the voice coil, it’s time to move on and look at what makes up a speaker. The cone is usually built-up on a suspension system so that will be easy for us assess!

If the cone of your speaker still has a firm, upright appearance after pushing along its sides and across its circumference then you know that something is wrong with it. A damaged or loose Connexus can cause this type of damage so make sure to check for cracks before buying!

Step 3- Remove the Speaker from its Housing

Once you’ve determined the origin of your problem, it will be much easier to start restoring them. The first step in this process is separating speakers from their enclosures so that we can get all parts completely cleaned up and checked out individually before starting work on anything at once!

Next, use the screwdriver from your repair kit to remove all of those mounting screws. You’ll want a wire holder or some other method for keeping track so that you can easily re-assemble once again when finished repairing!

Mounting the speaker is easy but there are some things you should keep in mind. For example, make sure that no wires overlap each other or get stuck under furniture; also remember where you stored your mounting screws because we can’t find them when needed!

Step 4- Disconnect the speaker surround

 speaker surround

When you’re ready to get rid of that old speaker surround, just use a sharp blade like the ones we mentioned in our first step. Run it under hot water for about five seconds and then carefully pry apart any clips or fasteners holding on your unit’s frame while making sure not break anything!

It is very important that you remove the surround carefully, including all of its glue. Be sure not to puncture any edges on your frame as these are quite fragile and can easily get damaged during removal process – which will leave us with an even bigger problem than just a speaker without sound!

Step 5- Remove the voice coil and speaker cone from your subwoofer.

Now that you have removed the speaker cone and voice coil, it’s time to recycle these old parts. Carefully use your sharp object (putty knife or tester edge) on either side of where they were connected in order to disconnect them from their respective places inside this subwoofer cabinet!

Be very careful when cutting the terminal wires. You don’t want to damage any of these components, so make sure you have them all in order before starting!

Step 6- Replacing the Voice Coil Motor

The voice coil is the most important part of your subwoofer and if it’s not functioning properly then all other aspects will also be affected. This means you should prioritize replacing this element first before anything else, even though there are many other procedures that require attention such as cleaning out any dirt or dust from around its gap (where sound waves travel).

With a little know-how, you can keep your voice coil sounding fresh. To do this simply take the new basket and fix it inside of gaps with enough glue so that when placed correctly over top of existing spider will have no problem staying put while providing optimal performance!

Allow for at least 24 hours for the glue to dry on the subwoofer before placing it!

Step 7- Fix the Speaker Frame

Next, put the enclosure back together and make sure everything lines up correctly. You’ll want to attach a surround around each edge that will come in contact with your speaker frame before applying some glue along these areas so they stay securely fastened when you assemble everything again later on!

Once again, you’ll have to allow another 24 hours for the glue to dry completely!

Step 8- Replace and Reassemble Other Components

The last step of assembly requires putting all other components in their proper places so that your speaker can work properly. Remember, the wires we detached in Step 3 must now be reattached to complete this process!

The easiest way to fix your old voice coil is by simply taking the terminals on it and connecting them with some wire. Simply put, you will need a soldering iron in order for this process work properly!

You can tell that your speaker cone is damaged if it sinks into place when pushing on the sides. This sinking action should happen across all parts of its circumference, not just in some areas like where you would expect to find holes for wires or ports!

NB: When you get a new set of wires for your coil, make sure they come with pre-attached ends. If not, use a smaller gauge wire and punch some tiny holes in the cone near where it will attach to the terminal posts on each side so that when pushed through from below using leverage via a soldering iron hold them tight while pushing up.

Finally, connect all of the other components you separated earlier to their initial positions. Fit your subwoofer into its enclosure and tighten it firmly together with mounting screws so that no air leaks out from around these parts!

Congrats on fixing your subwoofer! Now, connect it to your radio so you can enjoy enhanced audio.

How to prevent your subwoofer from blowing:

There are a few things you can do to prevent your subwoofer from blowing. First, make sure you’re using the proper size fuse for your amplifier. Second, use an inline filter on your power wire to reduce any electromagnetic interference (EMI) that could be causing problems.

Third, don’t crank up the volume too high! If you start to hear distortion, turn it down immediately. Finally, keep your subwoofer cool by making sure it has proper ventilation.

Following these tips, you can extend the life of your subwoofer and prevent it from blowing in the future.


We hope that you found this blog post helpful. We have covered the different ways to measure a subwoofer, the causes of a blown subwoofer, and how to fix it. In addition, we provided some tips on how to prevent your subwoofer from blowing in the first place.

If you have any questions or would like more information, please don’t hesitate to contact us. Thanks for reading!

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