If you’re looking for a guide on how to fix a blown subwoofer, then this post is the perfect resource. We’ll cover some of the most common causes of blown subwoofers and provide tips on how to determine which one it might be.

Once we’ve found out what’s causing your blown subwoofer, we will walk you through all of the steps needed in order to fix it!

What Causes A Blown Subwoofer?

Let’s discuss some of the most common causes of blown subwoofers.


The first cause of a blown subwoofer is if it overheats. This normally happens when there isn’t enough ventilation in the area where you have your unit installed or if it’s been on too long without being turned off at least once every few hours for some fresh air to get into the woofer unit!

If this ends up being what caused your blown-out subwoofers, then all that needs to be done is making sure they’re getting ample airflow and cooling down while not in use. 

You can also dust them with a cloth from time-to-time which will help keep any dirt buildups from causing additional heat problems.


The next cause of a blown subwoofer might be that it just isn’t compatible with your car system. 

If this is the case, then you would need to upgrade either your amplifier or subwoofers in order for everything to work properly together and not damage any other parts along the way!

Incorrect Installation:

There is always an outside chance that the blown subwoofers may have been caused by mishandling during installation. 

This can include things such as using too small of wiring or dropping them while trying to install inside of the vehicle itself which could lead to further complications down the road. 

All we can recommend here is going back over all steps taken when installing and making sure they were done correctly and using the right tools for each job.

By Default:

If none of the above reasons seem to be what was causing your blown-out subwoofer, then it could always have been a defective unit from the manufacturer which means you would need to either get in touch with them directly or purchase another one that hopefully doesn’t end up doing the same thing! 

Other Causes: 

There is also always an outside chance that something else may have occurred such as water damage inside of the vehicle itself.

If this happens, then all hope isn’t lost because we can still walk you through how to dry out your speakers quickly so they don’t become damaged by mold or mildew presence! 

No matter how you look at it, if your subwoofers are blown out then the most important thing is that they get fixed as soon as possible so any malfunctions don’t have a chance to spread.

How To Fix a Blown Subwoofer?

There are many reasons why a subwoofer might blow. It could be because of too high of an input signal, or it could be caused by wiring problems. Whatever the problem is, a blown subwoofer will not produce any sound. 

Here, we’ll show you how to fix your blown subwoofer like an expert! 

1) Locating the Blown Subs:

Locate the blown speaker in the vehicle and disconnect the wires from both ends. If there is any electrical tape around either wire end then cut it off with a pair of scissors before removing them from the amplifier box and/or speakers themselves. 

This will avoid accidentally shorting out anything when you touch them together again later on during installation. 

2) Removing the Dust Caps:

Remove all dust caps from all connections and solder them together. Don’t forget that the positive wire should be soldered to the positive connection point, and vice versa for negative connections. 

Use a heat gun or lighter to solder the wires quickly and securely. 

3) Cooling Stage:

Make sure you allow enough time for the solder to cool before touching it again. 

If at any point during this process you notice that your wires are getting too hot or start melting, then simply apply a small amount of electrical tape around them as an added layer of protection from shorting out and causing damage! 

This is especially important if both ends were originally covered in black electrical tape which may have been hiding some internal wiring problems all along. 

4) Checking up the Wiring:

Once everything has cooled down after being soldered together, cut off any excess strands with a pair of wire cutters so they don’t accidentally touch anything else inside the box itself when re-installed later on. 

5) Speaker-level Inputs:

Most amplifiers use speaker-level inputs instead of just regular RCA cables in order to work properly and not damage the amplifier itself when installed incorrectly. 

This means that you will need an adaptor in order for everything to function smoothly again.

6) Built-in Amp:

If your system doesn’t use speaker level inputs, then skip this step and go straight to installing into car speakers instead of amplifiers.

It is also important to note that if your vehicle already has a separate amp built-in or hard-wired then you’ll want to leave all existing wiring alone whenever possible.

Because it may include custom features such as bass boost controls which might be rendered useless after installation regardless of whether they are working correctly or not without modifying anything first with help from either an experienced professional installer or someone who specializes in-car audio.

7) Wrapping up the Things:

Once everything is soldered and cool, then all you’ll need to do next is test each connection by touching the wires together one more time before re-installing them into their respective locations within the amplifier box itself according to what was originally wired were during initial installation. 

This will make it easy for future reference if anything goes wrong again in the future and we can walk you through how to fix a blown subwoofer on your own without having to send it back out or pay an installer anytime soon! 

Final Thoughts:

With the given above steps, your subwoofer should be as good as new in no time at all. 

Be sure not to over-tighten anything when putting everything back together again, otherwise, you may damage sensitive parts which could end up requiring more work later on down the road if they’re damaged too badly during reassembly of any kind.

That being said, now that you know how easy it can be for anyone with some basic soldering skills to fix their blown subwoofer like an expert then don’t hesitate another moment before getting started today!

Steven Paul
Hi, I'm Steven Paul! I am dedicated to helping people learn more about subwoofers. My age is 49-year-old and passionate for helping others by doing detailed research, I really like working on SubwooferGuides.com because it gives me the opportunity to use my knowledge of research on Musical Guides. I have been researching about musical instruments for over 20 years and there is nothing that I love more than helping beginners get into the hobby of home theater audio. My goal with this site is to provide an unbiased resource where beginner's can come and find all the information they need to make educated decisions when shopping for their first subwoofer system.