If your home theater subwoofer buzz, you should find the main cause of this issue. Resolve these issues as soon as you can and save the overall home theater system. 

Why Does My Home Theater Subwoofer Buzz? In general, home theater subwoofers buzz due to cluster electric wires, mixed electric signals, and short circuits of the outlet. The ground loop of the subwoofer, inaccurate plug fixation, and broken subwoofers generate buzzing sounds. In addition, interference of power signals, an insufficient transformation of audio, and audio response leakage are significant reasons for subwoofer buzz. 

Problems in the home theater damage the sound levels, and the subwoofer never performs adequately. 

Why Does My Home Theater Subwoofer Buzz?

I have added reasons that cause this issue and easy methods to fix the home theater subwoofer.

Connection with alternating current outlet

The alternating current outlets are those electric portals that supply electric signals to multiple devices. In few cases, only the power cord of the subwoofer connects in these portals. 

The current changes are due to the variable demand of these signals, and the subwoofers go through electrical changes. 

The distortion of sound is one of the major issues that happen in the initial stages. 

The outlet of the alternating current cannot offer stable voltage to the home theater. The fluctuation of power supply also generates short circuits.

The defects to the electric passage and wires are common during these activities. 

It also damages the sound production of the subwoofer. It receivers current at one second, and it changes at other points.

The sound changes into a buzz, and you cannot hear the standard-quality sound.

The condition is unfavorable for a user of this appliance, and the problem requires immediate modifications. 

Check the alternating current outlets of these subwoofers. Remove its power cord and attach it to a single outlet with stable current flow. 

Position of plugs

The position of the plugs plays a significant role in the production of buzz. You can install these in the electric sockets and supply electric power to these tools. They have a particular way to install them inside the sockets.

Negligence in the installation of the plug-in leads to opposite insertion. As a result, the position of the plug changes, and internal information varies. 

The automatic electric systems cannot identify the opposite signals. They try to find accurate information to handle the changes. 

They can’t identify the power passage, and mixing occurs. You can hear the buzz with the original volume of the speakers. 

The wider joints for the plugs also lead to these issues and use expert skills to remove these problems. 

Change the wider prongs of the plugs or use an external tool. 

Adjust it inside the plug insertion section and alter the current polarity settings. Next, change the position of the plug upside down, and then check the audio of your home theater subwoofer.

Combine electric power source

Few people use the three plug setup for the connections of a subwoofer. It is suitable for one kind of sound device, but the subwoofers are selective.

They require a separate source for the electric supply. In addition, the selectivity of these products generates buzzing the subwoofer. 

They cannot differentiate between the combining of the electric signals. Also, the power cord of the subwoofer competes with the others.

It becomes a fighting situation, and more resistance develops inside the machinery. It generates an unnecessary and passive sound in your subwoofer. 

The buzzing sound can increase when you increase its volume.

The sound is unfavorable for hearing people, and they prefer to shut off the object. 

Approach the electric connections of your home theater and identify the passage. If the power cord is in a link with other accessories, then unplug it.

Attach it in another separate electric passage and reduce the competing activity of the electric cord. 

Ground device looping

A ground loop of this subwoofer is one of the problems in generating the buzzing sound. It happens due to the connection of these tools with the ground electric power. 

Other instruments also connect with the same path, but these have responses in the form of audio. In such situations, the problems of home theater receivers and other appliances generate. 

It happens due to the failure of inputs as well. The issues travel from the grounding section to these tools.

The passive sound increase due to differences in-ground loops, and it requires maintenance of the ground electric connections. 

The grounding of the electric power is the best solution. Handle the edges of the wire and connect one side to the screw of the subwoofer.

Make sure it is metallic, and then attach the other end with the ground connection of metallic nature. Check the quality and humming of sound and then make further repairs.

Mixing of electric wires of home theater subwoofer

The connections of these devices comprise multiple electric wires. Each of them has a separate passage, and they travel near each other. 

The power cables and the audio wires of these tools are separate. 

They vary in numbers according to the type of connectivity and dependence of ports. These things combine due to the mixing of the setup and forms clusters. 

The bundles can generate a mixing of wires, and they become complex setting conditions. 

The heavier cables can loosen the lightweight audio wires. 

The lack of maintenance results in the mixing of the signals, and a humming sound is hearable.

In few cases, the bundles can affect the signal conditions severely. 

The space declines for these electric passages, and the surrounding field interferes. There are no apparent signs of this issue, but it occurs with time. 

Uncluttering the electric wire bundles is one of the best ways to resolve these problems. Also, consider the use of these tools with excellent insulations. Finally, restrict the interference of electric fields and fix the problem.

No addition of an audio transformer

The looping and humming of the sounds also occur due to insufficient signal transformation. Again, this is because digital and analog signals compete for the production of sound conditions.

In the absence of these devices in the ground connection directly produces a buzzing sound. It is a repairable issue, and you can also consult with an expert person to discard the buzz. 

The addition of an audio transformer in the electric passage of the subwoofer is an excellent solution. It identifies the signals and then converts them to the required information. 

Overheating of subwoofers

It is a composite of electric connections and wires, and all of them work in coordination.

The excessive usage and old conditions of these structures lead to multiple inner damages. In addition, the striking of these connections generates resistance.

Heat produces inside the system, and it can damage the external surface of these tools. The results are distortion in the audio. Few people also complain that their home theater keeps turning off due to this problem.

These modifications occur inside and directly affect the quality of sound production. The fixation of this problem is complex due to internal damages. 

Bring the subwoofers to a professional for the diagnosis and repair of these problems.

Decide on the issue by checking all the surrounding problems. The repair may cost you few dollars, but the resolving strategy is worth the money. 

Signal interference

The interference of signals occurs when you connect more than one external device to the receiver. 

 A circle of sound signals develops that generates humming. 

You can hear it with the volume, and it enhances with time. The control of these receivers is a way to decline such issues. 

You can also identify the problem by disconnecting the other thing from this setup. If it reduces the humming, then you can repair it instantly.

Observe the problem of signals and interfering information. Disconnect the device and adjust it separately.

Use one setup at one particular time and demolish passive audio problems. 

Enjoy the high sound quality with these small fixing techniques. There is no need to change the wiring and other surrounding equipment. Detachment of multiple devices also provides one identifiable part for the sound tools. 

Leakage of power responses

The leakage of the power supply occurs in the linked devices of the subwoofer. The amplifier goes through various leaking problems, and the production of hum becomes convenient. 

The amplifier also damages due to changed setting conditions and alternative port connectivity. In addition, the resistance and high voltage of electric current can generate issues of a home theater amplifier. 

A part of it damages, and the connections become vulnerable. The capacitors are essential tools of the amplifying devices. 

They can break due to changes in electric power, and it affects the overall setup. 

Check the surrounding structures to find the problems of your amplifier. You can demolish the humming sound by replacing the capacitors. 

Alter the covers and then observe the performance of your system. Also, in case of surges, you need to install the protection tools. 

You can also contact the manufacturer to replace and install new devices. They also guide about the problems and future preventive measures to reduce humming.

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