How to Repair a Blown Speaker in 6 Steps

By Mike D. Schmitt

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A blown speaker can be a frustrating problem for anyone who enjoys listening to music or watching movies. Not only can a blown speaker sound terrible, but it can also affect the overall sound quality of your audio system. In this conversation, I’ll provide you with detailed instructions on how to fix a blown speaker, why it might have blown, and whether it’s worth fixing.

First, let’s talk about what a blown speaker actually means. A blown speaker is a speaker that has a damaged driver, which is the part of the speaker that converts electrical signals into sound waves. The damage can be caused by a number of factors, including physical damage, age, and exposure to extreme temperatures.

One sign that a speaker is blown is distortion in the sound. If you notice that your music or movies sound distorted or fuzzy, it’s likely that one or more of your speakers is blown. Another sign is a lack of sound, as a blown speaker may not produce any sound at all.

Now, let’s move on to the process of fixing a blown speaker.

Here are the steps you can take to fix a blown speaker:

  • Identify the problem: Before you start fixing the speaker, you’ll need to identify the problem. This can be done by listening to the sound coming from the speaker and determining if there is any distortion or lack of sound. If you’re unsure whether the speaker is blown, you can try connecting it to a different audio system to see if the problem persists.
  • Remove the damaged driver: Once you’ve identified the problem, you’ll need to remove the damaged driver from the speaker cabinet. This can usually be done by removing a few screws or clips that hold the driver in place. Be careful not to damage any of the other components while removing the driver.
  • Inspect the driver: Once you’ve removed the driver, inspect it for any visible signs of damage, such as cracks or tears in the cone or surround. If the driver is visibly damaged, it will likely need to be replaced.
  • Test the voice coil: If there is no visible damage to the driver, you can test the voice coil by using a multimeter. Set the multimeter to the ohms setting and touch the probes to the positive and negative terminals of the voice coil. If the multimeter shows a reading of zero or infinity, the voice coil is likely damaged and will need to be replaced.
  • Replace the driver or voice coil: If the driver or voice coil is damaged, you’ll need to replace it with a new one. You can purchase replacement drivers or voice coils online or at an electronics store. Make sure to choose a replacement driver or voice coil that is compatible with your speaker and has the same specifications as the original.
  • Reassemble the speaker: Once you’ve replaced the damaged component, you can reassemble the speaker by replacing the driver and securing it in place with screws or clips. Test the speaker to make sure that it is functioning properly and that there is no distortion or lack of sound.

Now let’s move on to the question of whether it’s worth fixing a blown speaker. In most cases, it is worth fixing a blown speaker, especially if it’s part of a high-quality audio system. Replacing a blown speaker is usually less expensive than buying a new one, and it can help to restore the sound quality of your audio system.

Fixing a blown speaker is a process that requires some technical knowledge and expertise, but it is usually worth the effort. By identifying the problem, removing the damaged driver, inspecting the driver or testing the voice coil, replacing the damaged component, and reassembling the speaker, you can restore the sound quality of your audio system and continue to enjoy your music and movies.

Common Causes of Blown Speakers

A blown speaker can be caused by a number of factors, including:

  • Overpowering: One of the most common causes of blown speakers is overpowering. When too much power is sent to the speaker, it can cause the driver to move beyond its limits and become damaged.
  • Physical damage: Speakers can become physically damaged through mishandling, such as dropping or hitting the speaker.
  • Age: Speakers can also become damaged over time due to wear and tear, which can lead to a blown driver.
  • Exposure to extreme temperatures: Exposure to extreme temperatures can also damage the driver of a speaker, causing it to blow.

How to Choose Replacement Drivers

If you need to replace the driver of a blown speaker, it’s important to choose a replacement driver that is compatible with your speaker and has the same specifications as the original. Here are some things to consider when choosing a replacement driver:

  • Size: The replacement driver should be the same size as the original driver, or it may not fit properly in the speaker cabinet.
  • Impedance: The replacement driver should have the same impedance as the original driver, or it may not work properly with the amplifier.
  • Power handling: The replacement driver should be able to handle the same amount of power as the original driver, or it may not be able to produce the same sound levels.
  • Frequency response: The replacement driver should have a similar frequency response to the original driver, or it may not produce the same sound quality.

Speaker Repair vs. Speaker Replacement

When dealing with a blown speaker, you may be wondering whether it’s better to repair the speaker or replace it altogether. Here are some things to consider:

  • Cost: In most cases, repairing a blown speaker is less expensive than buying a new one, but this may not always be the case if the speaker is particularly old or rare.
  • Sound quality: If you have a high-quality audio system, repairing a blown speaker can help to restore the sound quality of your system, while replacing it with a lower-quality speaker may not produce the same sound quality.
  • Compatibility: If you’re replacing a speaker in a multi-speaker audio system, it’s important to choose a replacement speaker that is compatible with the other speakers in the system.
  • Personal preference: Ultimately, the decision of whether to repair or replace a blown speaker may come down to personal preference. If you have an emotional attachment to the speaker or prefer the sound quality of the original, you may choose to repair it.

By understanding the common causes of blown speakers, how to choose replacement drivers, and the pros and cons of speaker repair vs. replacement, you can make an informed decision about how to deal with a blown speaker. Whether you choose to repair the speaker yourself or take it to a professional, you can be confident that you’re taking the right steps to restore the sound quality of your audio system.

By Mike D. Schmitt

Mike is your 'Go-To-Guy' for all things music and pro audio. Engineer, musician, luthier, and quite possibly the biggest gear head on the planet. With over 30 years of industry experience in the studio, and on the road, we turn to Mike and his expertise for those hard hitting music and pro audio questions.

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