Can you Fix a Blown Subwoofer

It’s one of the biggest nightmares for music lovers when you turn on your favorite song and instead of hearing your favorite artist belt out the lyrics, all you get is a loud screeching noise. That’s because your subwoofer has blown… Don’t worry though, we have some quick and easy steps to help you get it back up and running again in no time!

If you’ve got a blown subwoofer, you probably know it. The thumping, rumbling bass that once sent shivers down your spine is now replaced by an irritating buzz or high-pitched whine. You probably also know that the cost of replacing a subwoofer can be staggering, especially if you don’t know where to begin. But fear not, because we’ve got some tips and tricks that can help you fix a blown subwoofer.

Why Are Subwoofers Blown?

There are a number of different ways that subwoofers can be blown. Some of the most common include:

  • Power surges, electrical shorts, and excess heat. Basically, the subwoofer is designed to handle a set amount of power, so any more power than that could overheat the voice coil, causing it to burn out.
  • Installing the subwoofer improperly.
  • The subwoofer is overused.
  • Subwoofers are designed to handle a certain amount of power and volume before they start to give out. If you push a subwoofer beyond these limits, you’re likely to blow them out.

Can you Fix a Blown Subwoofer? Yes, it is possible to fix a blown subwoofer yourself. However, it is important to note that this is a difficult and potentially dangerous repair. Subwoofer repair should be left to a professional if you have no experience with electrical work.

How To Check For Damaged Parts Of The Woofer?

One of the first things you should do is check for damaged parts of the woofer before attempting any repairs. In order to check the woofer, you will need a multimeter to test for continuity.

Check the Impedance

A blown subwoofer will have little to no impedance. But if the impedance is not far too low (less than 0.03 Ohms) this might indicate a blown voice coil.

Check The Capacitor

A blown woofer will cause a change in the capacitor as it will either change in value or increase in size. A blown capacitor will also cause a decrease in impedance.

Check The Voice Coil On A Subwoofer With A Multimeter

If the voice coil of a woofer is broken, you will notice a decrease in the impedance of the woofer. If the impedance is less than 0.03 Ohms, then your voice coil is broken.

Fix a Blown Subwoofer By Yourself in 5 Easy Steps!

Fixing a blown subwoofer isn’t an overly difficult task. However, if you don’t know exactly what you’re doing, you may end up doing more harm than good.

Before jumping into repairs, you should make sure you have the right tools. You’ll need a few screwdrivers, including a small and large Phillips head screwdriver, a flathead screwdriver, and even a hex socket screwdriver. In addition, you’ll need a soldering gun to solder the voice coil back on the former. If you are experienced in electrical repairs and are confident in your ability to safely fix a blown subwoofer, follow these steps:

1. Unplug the subwoofer:

Before you begin any repair, it is important to disconnect the power source. In this case, unplug the subwoofer from the wall outlet or power strip.

2. Remove the subwoofer grille

subwoofer removed out of the cabinet
Remove the Subwoofer

In order to access the blown subwoofer, you will need to remove the subwoofer grille. This is typically held in place with screws or clips.

3. Remove the cabinet and Inspect the subwoofer

box or cabinet of subwoofer
cabinet of subwoofer

Next, you’ll want to remove the cabinet from the subwoofer box. Once you have access to the subwoofer, carefully inspect it for any visible signs of damage. If you see any burnt components or wires, proceed to the next step.

4. Replace the damaged component:

Using a soldering iron,

Components or wires that are burnt should be replaced. If you are not experienced in soldering, it is strongly advised that you take your subwoofer to a professional for repair.

Check the fuse:

Most blown subwoofers are caused by a blown fuse. Spotting a blown fuse is easy. If you are looking at it directly and it’s melted, it’s blown.

You can use a multimeter to check the fuse. If you see continuity or the meter doesn’t read anything; the fuse is blown.

Test the voice coil:

Damaged Voice Coil of a Blown Subwoofer
Damaged Voice Coil of a Blown Subwoofer

If the voice coil is bad, it can sometimes be fixed by heating it up to reapply the solder inside the coil. Before attempting to fix the voice coil, test it first. You can do this by connecting the speaker to a power source and then touching both of the coil leads together. If the speaker makes a clicking noise, then the voice coil is good. If it doesn’t make a clicking noise, a bad voice coil means the voice coil is faulty.

If the voice coil is bad, it’s probably best to get a new one. However, if you can’t get a new one, you can try to heat the voice coil to solder it back onto the voice coil former.

5. Test the subwoofer

Once you have replaced the damaged component, plug the subwoofer back in and turn it on. If the subwoofer is still not working, you may need to replace the entire subwoofer.

As you can see, repairing a blown subwoofer is a difficult and require advanced electrical skills. If you are not confident in your ability to safely repair a blown subwoofer, we strongly advise that you take it to a professional.

Final Thoughts!

If you have a subwoofer that has a blown voice coil, it can be fixed. However, if you don’t know what you’re doing, you could end up blowing out the speaker and making it worse. Check your tools and know-how before jumping into repairs.

Have you ever had a subwoofer blows? What did you do to fix it? Let us know in the comments!