Are subwoofers bad for your car – Can it be true?


Can subwoofers damage your car?

This is a question I get asked often and what I always say is, “Yes.” Subwoofers can potentially damage the car. Subwoofers are strong enough to potentially cause some parts in your car to become loose, but they will not cause any structural or mechanical damage. Some examples of things subwoofers will loosen are rearview mirrors, door panels and the nuts holding them to the car.


Subwoofer in your Car: How Do Subs Affect It?


Subwoofers May Cause a Car Battery to Drain

The most common way a subwoofer can damage your car is by draining the battery. You’re adding extra strain to your electrical system when you put a subwoofer in your car. Sound vibrations take a lot of power to produce. The power required to run a subwoofer draws from your battery.

The most significant issue is the constant power drain. When you play your subwoofers when the car engine is off, the battery will drain faster. This is due to the fact that batteries only charge when the engine is running. Many car batteries can be killed by just one subwoofer.

Even if the car’s engine is attempting to keep the battery charged, you might be drawing too much electricity from the electrical system, which can drain the battery even while it’s running. This is why if you replace your sub you should install a second battery or replace the alternator.


Subwoofers Can Cause Your Car to Rattle

Subwoofers can cause parts of your car to rattle and shake. The sound waves transmitted from these subs turn into air molecules, causing some parts of your car to vibrate. This is an especially common problem for people who have older vehicles with fewer interior soundproofing components or materials that absorb the noise better. It is important to note that rattling in cars is caused by low-frequency sound waves, not subwoofers themselves. There are certain types of parts that are more prone to rattle when the car moves.


Vibrations from the Subwoofer May Cause Car Parts to Become Loose

Subwoofers are designed to emit low-frequency sounds in order to produce heavy bass. The bass created by these subs can be enough to vibrate the car panels and hardware. The body panels are stressed by the resonance. Because of resonant frequencies, the vehicle’s body panels are being transformed into speaker components, and all of the little plastic tabs and mounting bolts for those areas are vibrated. Over time, screws and bolts that hold the car parts will become loose because of vibration. The vibration of the subwoofer creates more opportunities for loose screws and bolts to become even looser, or completely come off. This issue will usually occur on both older and newer vehicles.

Newer cars have had time to develop technology designed to specifically combat this problem, but owners of older models may not be aware that their car could be affected by the vibrations.


Is it possible to harm your alternator by using subwoofers?

Subwoofers don’t have the ability to damage your alternator on their own. However, if a sub and its amplifier draw too much power from your battery, they can cause harm to your alternator. This might lead to overheat and can potentially destroy the alternator.


How to Ensure That Your Subwoofer Does Not Damage Car: Soundproof!

When you fit a subwoofer in your car, it’s important to install soundproofing mats. They reduce vibration and ensure the overall quality of your music system is not compromised.

Soundproofing mats are also known as sound deadening materials and they come in a variety of types. Sound dampening mats are made of thermal or acoustic foam and are mainly used to reduce noise, vibration and echoes.

Soundproofing mats come with adhesive backing so they are easy to attach to any surface. Once you’ve determined what part of your car you need to soundproof, just peel off the protective layer and stick it down firmly. If necessary apply heat by using a hair dryer then press it into place exactly how you want


Is it true that subwoofers can break car windows?

A common question asked by many a car owner is can the sound from my subs break or shatter my windows? The answer to this question is yes. There are several factors to take into consideration when deciding whether or not your subwoofer can actually cause your car windows to shatter.

The first factor is the proximity of the car window to the subwoofer. The closer and more parallel the surface where you are projecting sound from, be it a wall, floor or ceiling, will speak directly to its ability to vibrate small objects in close proximity to its point of impact. This is why when you stand next to a speaker at a concert, the sound hits your chest like a ton of bricks.

The second factor is the decibel level. In order for something to shatter, it has to be under immense pressure and that pressure has to be applied very rapidly. Decibels work on the principles of being logarithmic, measured by tenfold. So if you increase the decibel level by 100%, you are actually doubling the amount of pressure that is applied to whatever it is that’s projecting the sound waves from your subwoofer. Most cars on the market can handle a few extra decibels of pressure that your subs will project in comparison to any system you would find in someone’s home.

The third and final factor is the type of car window that you have. Some cars on the market have factory-installed tinted windows, which factor in to how much pressure will be applied and whether or not they can shatter if exposed to high decibel levels for extended periods of time.


Conclusion on potential damage to the car by subwoofer’s sound

Subwoofers can potentially damage the car and loosen some of its parts, but they will not cause any structural or mechanical damage. There are no negative consequences of having a subwoofer in your car other than draining the battery every once in awhile and possibly loosening some of the parts. Some examples of things subwoofers might loosen: rearview mirrors, door panels, and the nuts holding them onto the car.


Frequently Asked Question (FAQ):

Can the car’s stereo system do damage to the car’s body?

No the car’s stereo system can’t do any structural damage to the car’s body. What can happens is this. If the drivers play the music at a high volume level it can induce vibrations or sound pressure in the surrounding areas. This means that rearview mirror might shake. Also if you pack in subwoofer and an amp there’s extra weight which any vehicle can handle. The best way to protect yourself from potential damage is by using sound dampening material, this also improves sound quality. When the sound system or stereo systems hit the resonant frequency of the sound wave then some plastic tabs might get shaken loose. So vibrations caused cracks are possible.

Can subwoofers damage your alternator?

Subwoofers alone will not damage your alternator. Subwoofers, along with their amplifier, can harm your alternator if it draws too much power from the battery. And this might cause the alternator to overheat and ultimately destroy it.

Are subs bad for your car?

This is a difficult question to answer as it depends on a number of factors, such as the make and model of your car, the proximity of the subwoofer to the car windows, the decibel level of the sound being produced by the subwoofer, and the type of car window you have. However, in general, subs can potentially damage your car and loosen some of its parts, but they will not cause any structural or mechanical damage. There are no negative consequences of having a subwoofer in your car other than draining the battery every once in awhile and possibly loosening some of the parts.

Related: Subwoofer not working but speakers are 

Will a subwoofer drain my battery?

Yes, a subwoofer can drain your battery if it is not used properly. If the subwoofer is turned on and left on for an extended period of time, it will eventually drain the battery. It is important to turn the subwoofer off when it is not in use to prevent this from happening.

Are subwoofers illegal?

There is no clear answer, as it depends on your jurisdiction. In some areas, car subwoofers are illegal if they exceed a certain decibel level, there may be restrictions on how loud your car stereo can be overall. It is advisable to check with your local authorities to see if there are any specific regulations.

Do subwoofers drain car battery?

Yes, subwoofers can drain your car battery if they are used excessively or for long periods of time. It is important to make sure that your car battery is in good condition and is regularly serviced to avoid any potential issues. If you are using your subwoofer sparingly, then it is unlikely that it will have a significant impact on your car battery. However, if you are using it frequently or for long periods of time, then it is possible that it could drain your car battery.

Last Updated on November 14, 2022 by Danny Reid