How to Fix A Car Speaker that Crackles (Complete Guide)

If you’re a car audio enthusiast, you know the importance of having a great sound system. And no doubt, dealing with crackling car speakers is a frustrating experience.

The major culprit of car speaker crackling is interference. Electric or electromagnetic interference can cause the speaker’s cone to vibrate erratically, which produces the characteristic crackling sound.

In this blog post, we’ll discuss all the possible causes of crackling sound in-car speakers and the best possible fixes for each.

How to Fix A Car Speaker that Crackles

How to Fix a Crackling Car Speaker (Causes and Fixes)

There are many reasons why a car speaker may crackle, but the most common cause is a loose connection. If your car speaker is crackling, there are a few things you can do to try and fix the problem.

Electrical Fields Interference

One of the primary causes of crackling sound in car speakers is electrical interference that interrupts and degrades signals.

This type of interference can come from various sources, including the wiper, alternator, and dashboard receiver.


  • Use shielded speaker wire to minimize electrical interference.
  • Adjust the head unit of the radio and CD player of your car.
  • Separate patch wires from power wires (keep them at least 20 inches apart).
  • When playing a CD, take the receiver off the dashboard.
  • Replace the car stereo with one that is less susceptible to interference.

Antenna Electromagnetic Interference

If the antenna cable is not properly shielded, it can emit electromagnetic noise that can interfere with the sound quality of your car speakers.


  • Use a shielding magnetic foil.
  • Use a noise suppressor to reduce the noise that the antenna picks up.

Loose Wires

Another common cause of crackling sounds in car speakers is loose wires. Over time, the vibrations from your car’s speakers can cause the wires to become loose. This can cause a loss of connection, resulting in crackling sounds.


  • Take all audio cables out of the amplifier. Try starting the car again to see if you still hear the noise. If the noise is still there, then the problem is with the wires.
  • Check that the wires (primarily the RCA cables) are tight and secure. If they are loose, you can try to tighten them yourself or have a professional do it.

Rusty Ignition

When rust accumulates on the ignition, it can cause the electrical current to become unstable and produce a crackling sound. This problem is often compounded by moisture, which can further corrode the ignition and cause the crackling sound to become louder.


  • Get a mechanic to scrap the rust and fix any damage
  • Consider installing spark plugs cables with carbon core for future-proofing

Poor Grounding

When your car stereo system isn’t properly grounded, it can cause a build-up of static electricity. This can, in turn, cause the speaker to emit a crackling sound when it is turned on.


  • Locate the ground wire in your car’s stereo system and ensure it is securely connected to the vehicle’s metal chassis.
  • Use a ground loop isolator to protect the car’s grounding from external interference.

Car Noise

Another cause of the crackling sound that can come from car speakers is outside noise interfering with the sound system. This can be caused by a number of things, such as the engine, alternator, and ignition system.


  • Use a car noise filter to absorb or reduce these unwanted noises.
  • Install noise-deadening materials in your car.

Bass Boosted Music

One often overlooked cause of crackling sound in car speakers is Bass boosted music. Over time, the Bass boost can cause the speaker cones to become damaged, which leads to the crackling sound.


  • Turn down the Bass boost on your car stereo.
  • Use the right Bass settings for various audio types.
  • Use a high pass filter to block low frequencies sounds.

Blown Out Speaker

If a speaker is blown out, something inside the cone has been damaged, and crackling is likely to occur. This can happen for a variety of reasons, such as playing music too loudly or having an amplifier that is too powerful for the speaker.


  • In most cases, a blown-out speaker will need to be replaced to get rid of the crackling sound.

Faulty Power Supply

The power supply provides electricity to the speakers, and if it’s not working properly, the speakers may make a crackling sound. This can be caused by a bad ground connection, a loose wire, or a blown fuse.


  • First, check all of your connections and make sure they’re tight.
  • Next, check your fuse box and replace any blown fuses.
  • Finally, if you’re still having trouble, you may need to get a new power supply for your car speakers.

Dust and Dirt Buildup

Over time, dust and dirt can accumulate on the speaker coils, causing the sound to crackle when the speaker is in use. This problem is most common in older cars, but it can happen to any car that isn’t regularly cleaned.


  • Clean the speaker cone. You can do this yourself with a small brush and some compressed air.

Moisture and Corrosion

Crackling sound in car speakers can also be caused by moisture and corrosion, which damages sound insulation. This can be caused by several factors, such as driving in humid or wet conditions or leaving the car windows open during a rainstorm.


Does Crackling Sound Mean My Car Speakers are Blown?

If you’re hearing a crackling sound from your car speakers, it could indicate that they are blown. Blown speakers can happen for a number of reasons, such as playing music too loudly or using low-quality audio files.

Several factors can also cause crackling sound, as discussed above, but it’s good practice to check if the speakers are blown if this occurs.

Accordingly, if you’re noticing a crackling sound from your car speakers, it’s vital to take action immediately. Continuing to use damaged speakers can cause further damage to your speakers and your car audio system.

Why do Brand New Car Speakers Crackle?

If you’re a car audio enthusiast, you know that one of the most frustrating things can be dealing with brand new car speakers that crackle. It’s especially disappointing when you’ve just spent a lot of money on a new set of speakers, only to have them crackle and pop when you turn them on.

There are a few reasons why brand new car speakers can crackle:

One of the most common reasons is poor wiring. If the wires connecting your speakers to your car’s stereo system are loose or damaged, it can cause the speakers to crackle.

Another common reason is that the speakers are not properly mounted. The speakers can vibrate and crackle if they are not secure on their mounts.

Finally, damaged wires and connections can also cause the speakers to crackle.

Can Crackling Damage My Car Speakers?

While crackling speakers are not necessarily harmful to your car speakers, they can be annoying. Additionally, if the interference is strong enough and the crackling movements persist, it can damage the speaker’s cone or other internal speaker components.

The Bottom Line

If your car speaker is crackling, there are a few possible causes and fixes. The most common cause is electric or magnetic interference, which can be fixed by shielding the wires to the car speakers.

Other causes include a damaged speaker, a rusty ignition, or bass-boosted music. As seen in this post, some of these problems can be fixed by yourself, but others will require the help of a professional.

Regardless of the cause, taking action to fix a car speaker that crackles is essential to ensure optimal sound quality.

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