Wireless Subwoofers – How Do They Work?

The Basics of Wireless Subwoofers

If you’re not familiar with wireless subwoofers, let alone their specific operation, it can be a bit confusing.

To make things simple, there are several main components involved in a wireless subwoofer system: a receiver, subwoofer driver, and an amplifier. And each component has its own little subcomponent. But all you need to know is this: a wireless subwoofer system operates on its own frequency and lets you adjust its volume independently from your audio system.

This way you can add more sound to your room and to your entertainment without having to add physical speakers. So, wireless subwoofers are like small sound systems in themselves.

But even though they are technically little, there are a few downsides to wireless subwoofers you should know about. First, they can be expensive. Second, their limited range means that you can’t take them to the back yard or move them around the house as you wish. Thus, they are more suitable for indoor application than outside use.

The wireless subwoofers utilize either direct infrared or radio frequencies to transmit a signal. Radio frequencies are more prone to outside interference, so you may experience signal loss if the frequency is not properly set. On the other hand, infrared technology has been around for a long time and is considered more reliable.

Transmission Methods for Wireless Subwoofers

Modern audio systems usually use digital amplifiers to power multiple speakers in a speaker system. With the massive surge in wireless systems, there have also been considerable developments in wireless speaker systems. A big trend nowadays is to fit a powerful subwoofer into a wireless subwoofer. This is in part due to the advantages of wireless systems, which include easy installation, versatility, and freedom from wires.

Many new wireless subwoofers are powered by digital amplifiers that have a number of modes for transmission. The two most common modes of wireless subwoofer transmission are DTS and Bluetooth.

Gizmodo explains that the newer wireless subwoofer systems make use of the DTS codec, which aids in data transfer to a 5.1 receiver system. The DTS codec allows the wireless subwoofer to distribute frequencies between 20 Hz – 500 Hz and one of its particular advantages is that it means that sound quality is preserved while you are streaming music via Bluetooth.

Bluetooth is also a convenient way to stream music wirelessly. You can stream music directly from your smartphone or tablet or from any compatible source via Bluetooth. This makes perfect sense if you are looking for flexibility and convenience with your audio system.


Wireless subwoofers are typically referred to as subwoofers—or subs—due to their powerful bass output. They consist of a cabinet covered in a specialized woofer speaker, a built-in amplifier, and a radiofrequency transmitter.

The two most popular types of subwoofers—passive and powered—use two different co-axial driver components for the woofers, or speakers. Passive subwoofers have no built-in amplifier and are often used in conjunction with a powered subwoofer that is connected to an amplifier so that both the subwoofers can work together.

Subwoofers use the radiofrequency (RF) technology to amplify and modify sound. The input signal received by the transmitter is sent to the subwoofer. During amplification, the signal is strengthened and converted into mechanical energy. The mechanical energy is then transmitted to the subwoofer, where it is turned back into acoustical energy. Amplification happens with the aid of suitable components (e.g., amplifiers, filters, power supplies, and drivers) embedded in the subwoofer. The transmission of the power to the subwoofer is accomplished by co-axial cables or air conduction. The co-axial cables transfer the electrical energy to the drivers magnetically.


Infrared subwoofers are very efficient and this is because they do not create heat like conventional woofers do. Infrared subwoofers use a slot loaded design and they have no need for air vents or dustcaps. Since they do not produce heat, they do not need to be cooled and this makes them highly efficient.

These subwoofers come with an infrared LED light and a heat sensor. The heat sensor serves two important functions, the first is to supply power to the LED and the second is to detect the vibration. When the sensor detects vibration, the LED turns on and when the sensor doesn’t detect vibration, the LED turns off. When the LED is on, it supplies the surface of the cone with light causing it to produce sound. As soon as the LED turns off, the cone absorbs heat from its surroundings and this makes it go back to its original shape creating the pulsing sound.


Most wireless subwoofer models are bluetooth compatible and work similarly to other bluetooth speakers. Once you choose a subwoofer, you have to turn on your bluetooth connection on your phone and set it to “pair with device”. Then follow the instructions of how to pair the device and you will quickly be ready to play your music.

The great thing about these subwoofers is that you don’t have to connect your phone to the subwoofer via a wire. Instead, they connect wirelessly. It’s just a matter of downloading your favorite music onto your phone, pairing the device, and then enjoying your favorite music with the incredible tunes of a wireless subwoofer.

The Bluetooth® connection only carries the music signal from the phone to the subwoofer. The bluetooth signal has a limited distance. Depending on your phone/device, it can be around 33ft (10m), 20ft (6m), or even less. This means that you can usually play from your phone or tablet from the location of your bluetooth subwoofer.

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Bluetooth technology has captured our lives by storm in the past few years. Even the most conservative people are getting Bluetooth headsets and speakers for their homes. It has become popular in homes, offices, and schools as well. This technology is spreading at such a great pace among the music lovers. You might be wondering how Bluetooth works exactly and why it is so popular among people. The answers to these questions lie in basic science. Let’s try to understand how Bluetooth works.

There are two types of Bluetooth devices such as transmitters and receivers. A Bluetooth transmitter is a device that wirelessly sends a signal to a receiver. Similarly, a Bluetooth receiver is a device that receives a signal from a transmitter.

Bluetooth transmissions are the same as radio transmissions. It works by allocating a specific amount of frequencies to the transmitter and receiver. Each device works on a particular frequency so that there is no interference between the devices. The device that is receiving the signal identifies it using the code. It is coded for data transmissions to identify the signals sent by the different transmitters. However, your music Bluetooth headset will work only with a Bluetooth receiver.

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Subwoofers; How Do They Work?

Many of us are familiar with devices that connect to the Internet over our home’s WiFi connection and work with an app on our Smartphone. But did you know that you can now add WiFi to your subwoofers as well?

The WiFi subwoofer is an exciting new product! It gives you the freedom to enjoy the low frequency sounds from your BluRay player, Apple TV, or any other audio source in your home, without the wires.

The wireless subwoofer connects to your home’s WiFi and allows you to choose the music you want to hear. Then, after choosing the audio source from the WiFi enabled remote control or an app on your Smartphone, the subwoofer is ready to play. With a WiFi subwoofer, you can enjoy all of the low-frequency vibes of your music anywhere in your home without the need for a wired connection.

The wireless subwoofer will forever change the way you listen to your favorite music at home. You can stream music wirelessly from your phone or tablet and enjoy your music anywhere in the room. And you can also stream music wirelessly from a Bluetooth-connected device like your Smartphone.

Advantages of Using Wireless Subwoofers

When you host a party or other social functions, you need speakers that can create a memorable experience for your guests. However, not everyone has the funds to purchase and install the best speakers.

So, is a quality subwoofer out of reach for you? Not at all ! Compatible wireless subwoofers would be your best bet if you're on a tight budget.

Being wireless, they help you save the cost of wires and other installation costs that you'd need to pay otherwise. The subwoofers transmit high quality bass signals through radio frequencies even through walls. The quality of the sounds can be as good as the quality of the speaker. It can easily fill a large room with sound.

So, if you're stuck between choosing wired and wireless subwoofers, it's time that you switch to wireless. Nowadays, wireless subwoofers come in a variety of designs, with the best rated products being wireless.

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These products are affordable, durable, and reliable, and above all, of high quality.

In this in-depth guide, you'll learn about wireless subwoofers- how they work, the benefits of wireless subwoofers such as less or no installation costs, and maintenance costs. You'll also learn about the best wireless subwoofers on the market.

Disadvantages of Using Wireless Subwoofers

The simple answer as to how wireless subwoofers work is that they use radio signals to transmit the audio feed from your AV receiver to the subwoofer.

A dedicated transmitter is attached to your AV receiver and an antenna in the subwoofer receives and broadcasts the signal. A wireless subwoofer has no connecting wires between the two components with the exception of the power cord.

Your AV receiver sends the audio feed to the wireless transmitter and from there it is broadcast to the antenna in the subwoofer. The signal is then sent to the amplifier and the amplifier will create an electrical signal which is sent to the woofer, vibrating the air to create the sound.

The biggest advantages to wireless subwoofers are convenience, being able to place the subwoofer in any location as long as it has an outlet, and system flexibility. Instead of having to run wires to the subwoofer location, nowadays all you have to do is get an extension cord and plug in your subwoofer. This makes it really easy to hide your subwoofer behind home theater seating or other items that may be in the way of the subwoofer’s path.

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The Importance of Placement for Wireless Subwoofers

Like any other speaker system, good sound quality cannot be achieved if you do not place your wireless subwoofers correctly. Placing your wireless subs is more difficult than placing a wired model because of the limitations from the use of a wireless receiver.

The receiver is typically a compact, lightweight, and unassuming box which is attached to a sound system. The receiver picks up a wireless signal from the subwoofer connected to it. The compact nature of the receiver allows you to place it in almost any location within the room.

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Now, the question is, where should you place the receiver in order to achieve that surround sound experience?

According to the experts, you should mount the receiver as close as possible to the back of the room and as far as possible from the main audio source.

In fact, in some cases, it’s the perfect position if it is mounted upstairs on an attic. It works best if you mount it vertically as opposed to sideways.

There are many factors that will affect the e chol s you get from your wireless subwoofer.

One of them is the number of wireless subwoofers you have. The number of wireless subs you can use depends on the receiver you buy.

Frequently Asked Questions About Wireless Subs

Do I really need a wireless subwoofer?

The short answer is “ yes, definitely.” Wireless subwoofers have several important advantages over wired units. You don’t have to worry about running wires across your room and the risk of damaging your walls. You also don’t have to worry about having to run a new cable if you need to move your subwoofer to another location.

Much of the wireless subwoofers for sale today also offer a significant improvement in sound over the traditional units.

What’s the difference between a wireless transmitter and a receiver?

The short answer is “ they both convert audio signals into radio signals for wireless transmission, but they have different purposes and can be used in different situations.

The wireless transmitter is a source of sound that connects to any audio-in source, including a TV. But, the only way to connect the transmitter to your subwoofer is via a 3.5mm audio jack that connects to the subwoofer with a cable.


In this wireless subwoofer guide, we defined what a wireless subwoofer is and what benefits it will provide you when you compare it with wired alternatives.

We also looked at some of the top wireless subwoofers on the market and reviewed 5 of them in-depth. We’ve looked at their features, main benefits, how to set them up and concluded with a helpful buyers guide to help you determine which wireless subwoofer is best for you.

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The concept for a wireless subwoofer is actually quite simple. The device uses a transmitter to send the music’s bass signal wirelessly to a receiver. The receiver decodes the signal from the transmitter then uses a subwoofer to get the low notes out to the listening area through the use of an audio cable.

Wireless subwoofers basically do the same thing as a passive subwoofer (one with no built-in amplifier) except they are completely wireless and convenient.

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