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What Is A Subwoofer? [6 Types of Sub Models & How They Work]


What is a subwoofer? Subwoofers are a type of speaker that reproduces sounds between 20 and 200 hertz. They are large speakers with specialized drivers called woofers that can create extremely low frequencies.

Amplification can be used to boost the volume of these woofers, which are housed in a wooden or plastic cabinet. The drivers used in subwoofers are typically larger than those used in other types of speakers, allowing them to move a greater volume of air and reproduce lower frequencies more efficiently.

A subwoofer also called a “sub,” is a type of loudspeaker that is designed to play bass and sub-bass sounds, which are very low-pitched sounds that are usually made by woofers. They are a type of loudspeaker that is often used in home theaters because they make low frequency music sound more full. Overall, subwoofers are capable of creating a powerful and deep sound.

What are subwoofers?

Brand new sundown subwoofer

A subwoofer is a type of speaker that is specifically designed to produce lower frequency sounds, often referred to as “bass.” It is usually placed at the bottom of a speaker enclosure and is used to create an immersive audio experience.

Subwoofers typically come in a range of sizes, from small enough to fit in a backpack to large enough to shake your entire house with thunderous bass.

Subwoofers not only provide the necessary low-end frequencies to complete the sonic landscape but can also be used for certain sound effects in movies or video games. With the right subwoofer, you can get the most out of your audio experience and become fully immersed in your music, games, and movie sound effects.

There are so many different types of subwoofers available on the market it can be overwhelming to figure out which one is the best for you. To help you out, here’s a list of the different types of subwoofers available.

Different Types Of Subwoofer Speakers For Bass Response

Ported Subwoofer

A ported subwoofer speaker is designed to reproduce bass frequencies better than a regular subwoofer. It works by using air pressure and sound waves to increase the bass response and produce a fuller, more powerful sound.

This type of subwoofer is commonly used in home and car audio systems, as well as in professional music production. It is important to note that ported subwoofers are not a replacement for a regular subwoofer, and they should be used in combination with one in order to get the best sound out of a system.

Sealed Subwoofer

A sealed enclosure subwoofer is a type of loudspeaker that is specifically designed to produce the lowest frequencies, known as bass or the frequency spectrum. It’s a great way to add some extra punch to your audio setup and take your home theater experience to the next level.

Sealed enclosure subwoofers are known for their tight and accurate deep bass reproduction, making them a must-have for any audiophile. If you are looking to get more bass from the audio signal that is located in the low frequency range of the spectrum, then these are the bass reflex speakers that you should get.

Powered Subwoofer

Powered subwoofers are an amazing audio innovation that can truly transform the way you experience music and sound. It is an active loudspeaker designed to reproduce deep low bass frequencies and provide a powerful, immersive sound experience.

In simple terms, it is a lower-frequency audio speaker that is powered by a built-in amplifier. This type of speaker is designed to produce lower frequencies, which provide a powerful, full sound. With this powered subwoofer, you can experience deep, thundering bass and a full-bodied soundscape that brings your music to life.

Passive Radiator Subwoofer

Passive radiator subwoofers are a type of subwoofer that utilizes a specially designed driver to create a low frequency bass sound. This driver is essentially an un-powered speaker, which is placed in a cabinet and connected to an amplifier.

The passive radiator then vibrates from the sound waves created by the amplifier, allowing for a more powerful deeper bass response than traditional subwoofers. The passive radiator also helps to reduce distortion and provide a smoother, more accurate low frequency sound.

You usually find these on Bluetooth speakers because they are usually low-powered, meaning that they do not have the capability to generate strong, deep bass sounds on their own. Bluetooth speakers are also designed to be portable and relatively small in size, meaning that the use of a passive radiator can maximize sound power without increasing the size or weight of the speaker.

Bandpass Subwoofer

A bandpass subwoofer is a unique type of audio subwoofer that is designed to enhance the bass output of any system. Unlike surround sound systems, a bandpass subwoofer utilizes a sealed and ported chamber that is engineered to maximize the sound quality, high-range frequencies, and output of your bass.

This allows you to enjoy a rich and powerful sound that you wouldn’t get with traditional subwoofers. The down-firing subwoofers are also great for those who love to hear electronic music.

Horn-loaded subwoofer

Horn-loaded subwoofers are designed to deliver a higher acoustic output with greater efficiency compared to traditional subwoofers. The horn of a subwoofer is shaped to increase the contact area between the driver and the air, resulting in deeper bass.

Its shape allows for better sound projection than other subwoofers, making them ideal for large venues or applications that require maximum sound pressure levels.

They can reproduce low frequency sounds such as those found in bass-heavy music (like hip hop, EDM, and metal) or in movies (like deep voices, explosions, and other sound effects). Allow you to hear the music or movie the way the composer or director intended by providing clearer stereo imaging.

Passive vs Active Subwoofers

Active vs passive subwoofer

When it comes to choosing a subwoofer for your audio system, you may be wondering what the difference is between passive and active subs. Both have unique benefits, and depending on your setup, one may be the better choice for your system. Let’s take a look at each and explore the differences.

Passive Subwoofers

A passive subwoofer is an essential component of any sound system, and the debate between passive and active subwoofers is an important one. It requires an external amplifier to power it and is connected to the amp’s speaker outputs.

Passive subwoofers are often more affordable than active subwoofers, are suited to larger systems, and can provide more power. It essentially consists of two passive radiators that are not wired to the amplifier instead of a port and produces sound with greater range.

Passive subs are perfect for adding low-end bass to your audio system, as they are often much more powerful than other types of subwoofers. The sound produced by a these subwoofers are also often much richer and fuller than that of other subwoofers, making them ideal for any type of audio system.

Active Subwoofer

While active subs are self-powered devices that contain their own amplifier, this means that the power it needs to produce sound is already inside the unit and does not require an external amplifier. This makes it easier to install and gives more precise control over the sound.

Passive subwoofers, on the other hand, must be connected to an external amplifier in order to generate sound.

The active sub is an ideal choice for those looking to add a bit of clarity and depth to their audio equipment. This type of subwoofer is also perfect for those who want to take their home entertainment systems to the next level.

With an active sub, you can experience immersive surround sound and enjoy the full richness of your favorite music and movies.

Which One Should I Pick For Car Stereo Systems?

When it comes to sound systems, the debate between passive and active subwoofers can be quite heated. The passive sub utilizes an external amplifier to power itself. In contrast, the active subwoofer contains its own amplifier – giving it a simpler setup and the capability to produce bass notes.

The active subwoofer also has more control over the lower frequencies and volume, allowing it to produce a richer sound and to reproduce sounds in low frequencies like the kick drums or bass guitar.

So, if you’re looking to get the most out of your sound system, an active subwoofer is the way to go. It will provide you with superior thick sound, a wider frequency range, and more control over the volume, allowing you to get the perfect sound every time.

How Does Subwoofer Work By Producing A Low Frequency Sounds

Subwoofers are an essential component of any home audio system, providing powerful low-frequency sounds that can fill a room with more bass. But how exactly do subwoofers work to produce bass notes?

Well, the answer lies in their unique design and construction. Subwoofers are powered speakers that employ a specially designed diaphragm, often made from rigid paper or plastic, to move both air and sound waves. This movement of air is then amplified and reproduced by the subwoofer’s amplifier, producing low-end sounds that can be heard and felt.

The size of the diaphragm, along with the wattage of the amplifier, will determine the power and quality of the bass output. Front firing subwoofers are the most common, with the diaphragm facing forward and directing sound toward the listener.

A subwoofer’s sensitivity is how much power it requires to produce a specific volume, and the sound pressure level (SPL) number is used to express this sensitivity. The crossover point of a subwoofer works to ensure that the subwoofer only receives those particular frequencies that it was designed to reproduce.

Furthermore, the woofer cones work in sync with the speakers to maintain a high level of accuracy and clarity for bass tones, making them sound rich and full.

Key Features of A Car Subwoofer for a Quality Sound System

Full-range speakers can reproduce mid and high frequencies allowing them to achieve a complete audio system. A bass focused speaker only targets those frequency ranges where the bass is prevalent, while a full-range speaker system is designed to reproduce sound across a broader spectrum.

If you’re looking for a quality sound system, a car subwoofer system is an absolute must-have. Subwoofers are responsible for the full-bodied, deep bass sound that gives the music a richness and depth that can’t be achieved with just a regular speaker. Here’s a list of key features to look for when choosing a subwoofer for your sound system:

Frequency Response

The frequency response of a subwoofer is the frequency range it can accurately reproduce. Look for a subwoofer with a wide frequency response so it can accurately produce high and low frequencies.


A larger subwoofer usually means more power and better bass. However, if space is a factor, you may want to opt for a smaller, more compact model.

Power Output

To get the best sound out of your system, you’ll need to make sure your subwoofer is capable of producing enough power. Look for a subwoofer with a high wattage rating and ensure it is compatible with the receiver of your sound system.

Power Handling

Make sure your subwoofer has enough power handling to meet your audio needs. This will ensure that you don’t need to strain the subwoofer and will ensure your system isn’t damaged.

Frequently Ask Question

Where do I place my subwoofers?

Subwoofers are a critical component of any home theater system and can be placed in a variety of locations. Depending on the size of your room and the type of sound you want to achieve, you may want to try a few different spots to determine where your subwoofers will sound best.

Generally speaking, subwoofers should be placed in the corners of the room, as this will help to increase the speaker’s lowest frequency range sub bass. You can also place them in the front of the room, either on the floor or on a shelf, as this will provide a more focused and detailed sound. Be sure to leave plenty of space around the subwoofer, as this will help with airflow and sound projection.

You will probably need to add some acoustic panels to absorb sound reflections and reduce the buildup of bass in the room. Bass traps also work great when it comes to dealing with bass nulls and standing waves, and they also help make the sound more evenly throughout the room.

Why is a Subwoofer Necessary For My Audio System?

A subwoofer is a crucial component of any audio system, allowing you to experience the full range of sound with clarity and depth. Subwoofers add richness and clarity to your audio experience by allowing you to hear sub bass sounds that regular speakers may not be able to pick up.

This means you can enjoy a greater level of bass heavy music and experience the full dynamic range of music and audio. Subwoofers also provide a sense of realism to your audio experience, as you can accurately experience the surround sounds of a live performance or movie.

Thus, if you are looking to get the best out of your audio system, investing in a subwoofer is a must. Most subwoofers are available in a variety of sizes and shapes, so you can easily find one to suit your needs. A subwoofer can add a thick sound to your sound system with just one speaker.

Last Updated on: February 17, 2023

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