Static in Subwoofer? (Fixed)

While subwoofers brings in the low frequency outputs, it’s possible for these units to pick up unwanted electrical signals in the course which is also referred to as static in speakers and subwoofers.

Let us understand what static refers to, what causes it, and how to fix it in subwoofers and speakers.

What is Static in Subwoofers?

Static is an interruption in the sound output by speakers and subwoofers.

It typically occurs when the sound signals carry too much power in the process of being transmitted to the speakers and subwoofers.

Additionally, the unwanted signals picked up by the wires from the surroundings or connectivity faults can cause static.

It will result in a cracking, buzzing, or humming noise (which is a result of static), however, you can easily get rid of it by determining its cause.

The most common cause of static is loose wiring or connectivity between the sound systems, speakers, and subwoofers.

You will first need to find the source or the actual cause of static in subwoofers before fixing them, however, you can try a few steps that may fix the issue.

Let’s explore the causes of static in subwoofers along with their possible solution.

Causes and Solution of Static in Subwoofers

Static in subwoofers typically occurs when it picks up unwanted electrical signals or too much electric current beyond its capacity.

However, there are several factors that can cause static that we will discuss below along with the possible solutions.

Loose connectivity or improper connections

Loose connectivity between the speaker wires is the most common source of static noise.

Additionally, improperly wiring the units can also lead to static sound from subwoofers.


Faulty Speaker wires

Over time the wires may turn faulty or wear out which can be another cause of subwoofer static.


  • Make sure to inspect the wires for any damage or signs of wear out and in case you find faults you will need to replace them.
  • Additionally, if the wires you are using are too old or of low-grade quality, try replacing them with good-quality speaker wires.

Faulty capacitors

It could be faulty capacitors on the amplifier’s PCB or other heat-stressed components on the board causing electrical static.


  • Inspect for possible leaks or blowing signs and replace the subwoofer’s capacitor.
  • Over time a weak capacitor can fail to do its job properly.
  • You will need to reach out to the amplifier’s circuit board to get it replaced.

Ground loops or Earth Loops

Grounding or Earthing is very important for safety reasons and can occur when multiple devices are connected through a single ground.

The possibilities are even higher especially when linked to different wall outlets (AC outlets).


  • Electricity should have a clear path to the ground or else may cause shorts and static in subwoofers and speakers.
  • Make sure to get the grounding done appropriately for your electronic appliances including the subwoofers and your sound system.
  • You can contact a professional electrician to get the job done.

Interference with other Devices

Speakers use electromagnets to convert electrical signals into sound and hence are capable of picking up signals from other sources in your home.

Devices such as radios, Wi-Fi routers, phones, baby monitors, televisions, and other electronic devices, etc., can transmit electromagnetic radiation to the atmosphere.

These radio signals can be picked up by your speakers and subwoofers and result in static noise.


  • If you have placed the subwoofer close to such devices, try moving the unit away from the source of the interference.
  • Additionally, you can use shielded speakers and cables that can help you get rid of the static quickly.
  • These types of equipment are designed to not pick up unwanted signals from the surroundings.

Final Thoughts

Static in subwoofers can be sometimes annoying and difficult to determine the actual cause.

The most common step you can follow is disconnecting it from power, unplugging the cables, and then plugging them back properly.

Improper grounding and low-grade or faulty cables are other possible causes of static noise from speakers.

Finally, you can try moving your subwoofer away from other electronic devices that can leak radio signals.

Armed with a Diploma in electrical engineering and a remarkable 12 years of expertise, he excels in rejuvenating music systems, washing machines, dryers, and laundry-related appliances. Manish's profound insights and practical know-how establish him as a credible authority in appliance and music system repairs. Contact: manish.singh (at) He's always ready to lend a helping hand!