How To Make Subs Louder Outside The Car (8 Simple Tricks) Flawless Car Guide

How To Make Subs Louder Outside The Car

If you’re like most people, you probably love listening to your favorite music while driving. But sometimes the music can be a bit too quiet inside and outside the car. Making subs louder outside the car can be a great way to improve your listening experience besides being a big head turner. But how to make subs louder outside the car?

Generally, people think louder is better and thus focus only on increasing the power and adding an amplifier to get loud subs. Some even go for getting an additional subwoofer and changing the position to get that earth-shattering effect outside the car. Still many of them fail to get that loud subwoofer. 

In this article, we will have a look at things that make loud subwoofers, common mistakes to avoid, and how to make subs louder. But before we start our give it’s important to understand that subwoofers are created as an internal component of your car stereo. If it’s not performing to its optimum level, you will have to bring some changes in settings to get the best possible results. 

How To Make Subs Louder Outside The Car

Things That Make Loud subwoofers:

Loud subwoofers make an impact in the audio world and for good reason. They produce thundering bass that can shake floors and rattles windows. Many different things can make subwoofers create a loud sound. 

All these things work together to create the best possible experience when listening to music with a subwoofer. Following are the things that help in making subs louder outside the car:

Subwoofer Size:

Subwoofers come in all different shapes and sizes, and the size of the subwoofer does have an impact on its loudness. Larger subwoofers can produce more sound than smaller ones. This is because they have more surface area to create sound waves, and they can move more air. 

In addition, larger subwoofers typically have more power than smaller ones, which also contributes to their louder volume. So if you want the loud subwoofers, you should consider choosing a large model.

Keep this in mind, large size means loud sound but at the cost of more space covered by the sub. So if you have limited capacity in your car, you will have to compromise on one thing for another. 


Subwoofer sensitivity is one of the factors that determine how loud a subwoofer can get. The higher the sensitivity, the louder the subwoofer will be. This is because a high-sensitivity subwoofer doesn’t need as much power to reach its maximum volume. 

So, a subwoofer with high sensitivity will be able to play louder than one with a lower sensitivity, using the same amount of power. Sensitivity is measured in decibels (dB) and you will have to pray more to get a higher sensitivity to loud subwoofers. 

How To Make Subs Louder Outside The Car

Enclosure Type:

To make a Loud subwoofer, you must have the right enclosure type. Some people might think that just because they have a powerful subwoofer, they don’t need an enclosure. However, this is not the case. The enclosure helps to direct the sound and amplify it, making your subwoofer louder. 

There are two main types of enclosures: sealed, and ported. Sealed enclosures are airtight and provide the tightest, most accurate bass response. They are best for small to medium-sized cars and work well with a wide variety of speaker sizes and shapes.

Ported (or vented) enclosures use a tuned port or duct to increase the efficiency of the woofer, resulting in louder bass output. They are best for big SUVs and can handle more power than sealed enclosures. They also offer more SPL (sound pressure level).

Power Handling Capacity:

Be sure to consider power handling when you are thinking of making subs louder outside the car. The more power a Loud subwoofer can handle, the louder it will be able to play without distorting. 

This is due to its large magnet and large voice coils capable of dissipating high amounts of energy. Hence, allows it to produce louder bass frequencies without compromising the quality of the sound.

However, it is important to know that the power handling capacity is just one of the things that help in making subs louder outside the car. A subwoofer with a higher power capacity and lower sensitivity won’t be as loud as a sub with low power but high sensitivity. 

You must inspect the actual continuous power RMS than peak wattage because it can be sometimes twice as high. This trick is often used by producers to deceive the buyers. They may claim that certain subwoofer produces 2,000W but actually, the real power will be between 800-1000W RMS. 

How To Make Subs Louder Outside The Car

Size of Box:

Most people would agree that the size of a subwoofer enclosure makes a difference in how loud the subwoofer can play. The larger the enclosure, the louder the subwoofer will be. This is because a larger enclosure provides more air space for the woofer to move and create sound. Additionally, a larger box will also provide more bass extension, or the ability to produce lower frequencies.

However, a large box can be more difficult to fit into a small space, so it is important to consider your needs before making a decision.


Another thing that helps make subs louder outside the car is its design. Typically you can find subs in Flat, cylindrical, or square shapes. A flat boxed subwoofer is usually the loudest among the three due to its large volume.

A cylindrical box on the other hand offers a more focused bass for a great experience. The square shape, at last, offers a sweet spot for those who aren’t looking for a loud subwoofer or focused bass.

How To Make Subs Louder Outside The Car

Built-In Amplifiers:

Just like the things mentioned above, a built-in amplifier helps a lot in making the loud subwoofer. So, whenever you are choosing the sub, go for the one that comes with the built-in amplifier.

The reason behind this is that a built-in amplifier doesn’t require additional power to operate rather it uses the same power as the sub. It also saves you from carrying an AC adaptor with you all the time. 

Speaker Placement:

The placement of your sub decides how loud it is gonna be. Sound waves emitted from speakers will bounce off of surfaces around them and create an echo if the speakers are pointed in the wrong direction. This can cause the sound to be muffled and difficult to hear.

Placing the speakers so that they face the trunk will help to direct the sound towards the exterior and make it easier for everyone outside to hear. It will help you get the feel of a loud subwoofer without any additional cost.

How To Make Subs Louder Outside The Car

How To Make Subs Louder Outside The Car?

Subwoofers are an important part of any car audio system, but many people don’t realize that they can be made louder. By making a few simple adjustments, you can increase the power and volume of your subwoofer, making your driving experience even better. Following are a few ways that you can make your subwoofer louder. 

Increase The Number of Subwoofers:

How To Make Subs Louder Outside The Car

There is no getting around it, if you want your subwoofer to be loud, you’re going to need more than one. While a single subwoofer can produce decent bass, adding a second (or even third) subwoofer will result in significantly increased volume and low-end response.
Adding more subwoofers will create more air movement and help the sound waves travel farther, resulting in a louder overall sound. 

The exact number of subs you’ll need to achieve the desired level of loudness will vary depending on the size and power of your subs, as well as the space available in your car. But in general, doubling (or tripling) the number of subs should result in a significant increase in volume.

If you are buying additional subwoofers, be sure to select ones that are compatible with your current setup and that will produce the desired results.

Increase The Power:

To make the subwoofer louder outside the car, you can try increasing the power of your sub. Increasing the power will automatically increase the overall bass making it louder outside the car. 

To increase the power of your sub, try lowering the final ohm impedance or bridge it. You can observe a significant improvement in overall performance.

Increase The Size:

There are a few ways that you can make the subwoofer louder. One way is to increase the size of the subwoofer. This will make the subwoofer louder because it will have more space to move air and create sound due to the high pressure generated. 

Use a Ported Box:

How To Make Subs Louder Outside The Car

A ported box is designed to increase the efficiency of the subwoofer, which means that it will be able to produce more sound. A ported box is a speaker enclosure that has one or more ports, which are openings in the cabinet that allow air to escape freely than in a sealed enclosure. This design helps to increase the efficiency of the system, making the subwoofer louder. 

In addition, a ported box will also help to improve the bass response, providing you with even better sound quality. You can either build your ported box or buy one that’s already been created. When choosing a ported box, be sure to pick one that’s the right size for your subwoofer. 

But if you’re looking for the easiest way to make the subwoofer louder, a ported box is the way to go.

Open Car Windows:

Most people would agree that the sound quality from a subwoofer is better when the car windows are open. This is because the sound waves have more room to travel and dissipate, which gives you a louder and cleaner bass response. If you’re trying to make your subwoofer louder, opening the windows is the best way to do it.

Position Properly:

Positioning your subwoofer properly is key to maximizing its potential and making it louder. If you place your subwoofer in the wrong spot, it will not sound as good as it could. 

The best position for a subwoofer is facing the trunk. Positioning it while facing the trunk will help maximize the sound and make it louder outside the car. 

Avoid placing your subwoofer facing the seat. This will cause the sound to spread out and not be as loud as it could be. Also, make sure that you don’t block the ports on the back of the subwoofer. This can also reduce how loud the subwoofer sounds.

Do Proper Tunning:

How To Make Subs Louder Outside The Car

Tuning the subwoofer for a loud sound is a time-consuming task but it’s worth spending the time. You need to adjust the settings on your amplifier and equalizer to get the best possible results. You can even improve the results by adjusting the location as well.
Adjust the gain and frequency so that the amp is working at its best. You may also need to adjust the crossover settings on the amp to ensure that the low-frequency sounds are being directed to the subwoofer and not your speakers.

Experiment with different settings until you find the combination that gives you the best results. Remember, it is always better to start with lower settings and increase them gradually until you reach the desired level of loudness. Too much power can damage your speakers, so be careful not to overdo it.


When selecting a subwoofer, it is important to make sure that the frequency range of the subwoofer is appropriate for your needs. The frequency range of a subwoofer determines the lowest and highest pitches that the subwoofer can produce. If the frequency range of your subwoofer is too low, it may not be able to produce high-pitched sounds and vice versa.

Usually, subwoofers nowadays come with a frequency range of 100-500Hz, but if you are looking for a loud subwoofer consider buying the one with a frequency range of around 2000Hz.

What Is The Power Requirement Of Your Subwoofer?

RMS wattage is a key factor in the power that you supply to your subs. Matching the right amplifier requires that you first consider the RMS power.

The subwoofer’s RMS power should be equal to or lower than the amplifier for best results. Because of the power reserve, the amplifier should be greater than the subwoofer to minimize or eliminate clipping at the highest volume levels.

I.e. If your sub has 2000 RMS then its amplifier must be around 2500 RMS and 3000 RMS. 

Be aware that both the amplifier and subwoofer have to match impedance. If your sub supports 1 ohm, then the amplifier must also support 1 ohm. Keep in mind to buy an amplifier to match the subwoofer, not the subwoofer to match your amplifier. 

How To Make Subs Louder Outside The Car

Proper Tunning Of Amplifier For Loud Subs:

Installing an additional subwoofer and amplifier won’t be enough if you are looking for how to make subs louder. To get the best possible result from your sub, you’ll have to tune the settings of your amplifier. 

If you are not ready for proper adjustments, get ready to bear distorted sound or poor bass which could be improved. 

A few simple adjustments to the amplifier’s settings will help you get the loud subwoofers. 

The first thing you will want to do is make sure that the amplifier is in phase with the subwoofer. To do this, set the phase switch on the amplifier to match the phase of the subwoofer. 

You can also adjust the crossover frequency on the amplifier. This will help to ensure that all of the sounds from the subwoofer are directed towards it and not towards the other speakers in your system. 

You may also want to increase the gain on the amplifier of your subwoofer until you hear a clipping noise. Be sure to listen carefully when making any changes to these settings, as they can affect how your system sounds overall.

How To Make Subs Louder Outside The Car

Common Mistakes That Affect Your Loud Subwoofers:

To make your subwoofer louder, you first need to identify and avoid the common mistakes that affect its overall performance. There are a few of the most common mistakes to avoid:

Lower Frequency:

Lower frequencies are often what people focus on when trying to make their subwoofers louder. However, this can be a common mistake that affects the overall quality and volume of your subwoofer. 

There are a few things you can do to make sure you’re getting the most out of your subwoofer. Just keep in mind, no matter which setting you try make sure not to play music below 40Hz.

First, make sure you’re using an amplifier that is capable of driving your subwoofer to its full potential. Second, experiment with different settings until you find the right balance between low and high frequencies. Finally, don’t be afraid to turn up the volume – sometimes it takes a bit of extra power to bring out those low tones.

The Phase Difference Between Subwoofer & Speaker:

When connecting a subwoofer to a speaker, many people do not realize there is a phase difference between the two. This can often lead to an inaccurate volume level for the subwoofer. 

The main reason for this phase difference is that the speakers and subwoofers are designed to work with different frequency ranges. Speakers typically handle mid-and high-range frequencies while subwoofers are dedicated to low-frequency sounds. 

It is important to match the phase of the subwoofer with the speaker to create a cohesive sound. If they are not in sync, one will overpower the other and you will not be able to get the most out of your subwoofer. 

Improper Size:

Many people, when they buy a subwoofer, do not think about the size. They just pick one that looks good to them. This is a common mistake that can affect the loudness of your subwoofer. To make your subwoofer louder, you need to get the right size for your space.

A lot of times, people will buy a smaller subwoofer because it is cheaper or because they do not have enough space for a larger one. This is a mistake because a smaller subwoofer will not be able to produce as much sound as a larger one. You may also end up with distortion if you try to play your music too loud with a small subwoofer.

If you are looking for a louder subwoofer, you should consider getting one that is the same size as the space you have available. It will complement the best possible loudness.

Wrong Wiring:

Wrong Wiring is a common mistake that affects your loud subwoofers. When wiring your subwoofer, it is important to get the polarity correct. This means connecting the positive and negative terminals on the amplifier to the positive and negative terminals on the subwoofer, respectively. If you connect them incorrectly, you will not get the most out of your subwoofer. You may even damage it.

One way to test for polarity is to use a test CD with a sine wave track. Play the track and listen to the sound of the bass notes. If they seem weak or lacking in power, then chances are you have your wiring reversed. Another way to check is to look at the speaker’s terminal markings. The + sign should be connected to the red wire, and the – sign should be connected to the black wire.

How To Make Subs Louder Outside The Car

How To Improve Bass Of Your Subwoofer?

If you want to improve the bass of your subwoofer, you can try some simple tips. A few of them are as follows:

Start With Basics:

Before you proceed to other steps, make sure that all the basics have been cleared. If your subwoofer has a built-in amplifier, make sure to plugin before you proceed to other steps.

Likewise, If your subwoofer doesn’t come with a built-in amplifier, you’ll have to install one before moving to the next steps. Once you have done the basics move to the second step.

Check The Volume And Bass Levels:

Many people want their car audio system to sound great, but they do not know how to get the best bass out of their subwoofer. To improve the bass of your car subwoofer, you need to check the bass level. You can do this by adjusting the crossover frequency and the amplifier gain. You may also need to adjust the phase of your subwoofer. By following these steps, you can improve the bass of your car’s audio system.

Another way to improve the bass of your subwoofer is to check the volume. Many people make the mistake of cranking up the volume on their subwoofer to increase the bass quality, but this can have the opposite effect and damage your speakers.

You don’t want it too loud or too soft. The ideal level is where you can feel the bass, but it’s not so loud that you start hearing distortion. This will give you the best possible sound quality and won’t damage your speakers. 

Install A Preamp:

Installing a preamp is an easy way to improve the bass of your car subwoofer. Bypassing the built-in amplifier in your head unit and sending a stronger signal directly to the subwoofer will result in a deeper, more powerful bass. 

There are several different preamps on the market, so it’s important to do your research and find one that fits your needs. Once you have selected a preamp, installation is relatively simple; most models just require plugging in a few cables. 

If you’re not comfortable installing the preamp yourself, you can always take it to a professional for help. Once installed, you’ll be able to enjoy booming bass that will make any ride more enjoyable without breaking the bank.


Do I Need To Connect Another Car Subwoofer?

If you can have a little extra space in the trunk, adding multiple subwoofers in one large box can enhance your music experience. 

Try experimenting with playing subwoofers below 210Hz this will definitely help in making subs louder outside the car.

How Much Power Do My Subwoofers require?

Each piece of power you always require to provide your subs must be dependent on the RMS voltage value they’re operating with. Upon receipt of the RMS voltage level, you first need to maintain the RMS wattage in mind when picking an amplifier.

How to make subwoofer louder outside the car?

There are several ways you can follow that will make the subwoofer louder. You can try increasing the number, power, size, use a ported box, proper tuning, and more. Another option is to use a better speaker. And last, you could try using an alternative audio source, such as streaming music from the streaming services Spotify or Apple Music.

Does a bigger box mean loud subwoofers?

No, the box of the subwoofer doesn’t make the subwoofer louder all the time. It’s just one of the other important factors such as speaker quality, enclosure type, subwoofer size, sensitivity, and speaker placement.

You will need to consider others factors as well to make the subwoofer louder.

How do I make my sub-bass deeper?

You can enhance your sub-bass in a variety of ways, including increasing the power amplifier, amplifying the subwoofer with an external amplifier, or utilizing a larger subwoofer. You may also strengthen the isolation of your subwoofer by installing it in an enclosure or mounting it on a sturdy base.
These will help you get a louder yet deeper bass. 


In conclusion, making subs louder outside of the car is possible, and there are several ways to do so. The most effective way to make loud subs is by increasing the number of subwoofers, though this may not be feasible for everyone. Other methods, such as using a ported box or increasing the power and size, can also be effective in making subs louder outside the car.

Whatever method is chosen, it is important to make sure that the subs are properly tuned and that the system is properly placed. Hopefully, you found the answer to your question about how to make your subwoofer louder?

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