Converting Wired Subwoofers into Wireless (Guide)

Wireless Subwoofers and Speakers makes the operation easy by wirelessly transferring audio signals via smartphones or other audio sources.

It will help you reduce the tedious wiring from running around your room and also the need to place the input and output sources closer.

If there’s an option to convert your existing audio system to wireless with the help of wireless subwoofer kits, then there’s no need to invest in a new sound setup altogether.

In this article, we will discuss the steps to transform your wired subwoofers and speakers into wireless using the right wireless subwoofer kits.

What does the wireless Subwoofer kit include?

A Wireless Subwoofer kit typically includes a transmitter and a receiver, and the required accessories (i.e., supporting cables and jacks) for the setup. The transmitter is usually connected to the receiver or the sound source using the necessary cables. Similarly, the receiver is connected to the output units such as Subwoofers and speakers.

Some wireless subwoofer kits offer connectivity options for multiple speakers and subwoofers.

The transmission of sound signals is done via the wireless transmitters and the receivers.

All you need is a proper connection between the systems and powering them up to experience the best sound quality wirelessly.

How to choose the best Wireless Subwoofer Kits?

To convert your existing subwoofer into a wireless one you can opt for wireless subwoofer kits.

However, to choose the best kit, you will need to consider a few factors such as range (both frequency & wireless distance), connectivity ports, audio quality, and ease of setup.

Easy Setup (Suitability)

Do not opt for any subwoofer wireless kits that aren’t suitable as they can complex to setup.

Make sure to check the specifications and requirements if they meet your existing sound system.

Also, look if the kit comes with a step by step instructions wherever possible.

Range (Wireless distance)

The distance range between the receivers and transmitters is another important factor that you cannot ignore.

The distance range can vary depending on the types and brands of different wireless kits.

Typically they can range from 10 feet and up to over 100 feet, depending on their type, moreover, their cost will also vary accordingly.

Frequency Band

You can also take into account the frequency band your wireless subwoofer kit uses, which can range from about 2.4 GHz to 5 GHz and more depending on the kit, to get a better idea of the wireless performance of your kit in terms of its range, signal strength, connection stability, and other factors.

The higher frequency band options will benefit you with the best performance from a wirelessly connected subwoofer.

Sound Quality

Most wireless subwoofer kits come with audio quality ratings, hence choosing the maximum rating can help you deliver the best sound quality even with wireless connectivity.

Typically the ratings offered are as 16 bit/44 kHz, 16 bit/48 kHz, and sometimes 24 bit/48 kHz on most wireless sub kits.

The idea should be to choose a kit with a better or higher audio quality rating.

It will ensure a better audio quality even when you are using your standard subwoofer wirelessly.

Connecting Ports

Although, the kit transfers sound signals wirelessly to different units, the transmitters and receivers need to be connected to their respective units (subwoofers and audio sources) using cables or cords.

Hence, you should make sure to check the connecting ports of the kit you are choosing i.e., ports such as Aux, RCA, USB, and others if required.

This will ensure that you will be able to arrange a few connectors if required for a smoother setup.

How to convert a wired subwoofer into a wireless Subwoofer?

To convert a standard subwoofer and speaker to wireless you will need a suitable wireless kit.

The kit typically includes the required components for setup including a transmitter and receiver.

The transmitter connects to the audio source and the receiver connects to the subwoofer or speaker units.

You will need to follow the instructions correctly and make sure the audio source and subwoofers are powered through an electrical outlet.

The sound signals are then transferred through the audio source wirelessly to the output units such as subwoofers and speakers.

Let us look into the step-by-step instructions on converting your standard subs to wireless.

Things you will need

It is always better to gather the required items before you start the process, key things to gather before hand includes:

  • A suitable wireless kit (includes transmitter and receiver).
  • Audio source (such as AV receiver, soundbar, or amplifier, etc,.)
  • Power cables for the transmitter and receiver.
  • Basic hardware tools for installation (Screwdriver or other basic tools)

Things to consider for a suitable wireless kit

To choose the right wireless transmitter kit, you’ll have to consider the following steps:

  • Subwoofer Compatibility: First, check if your subwoofer itself has a built-in wireless technology, if yes then it’s not worth investing in the entire kit.
  • Secondly, make sure that wireless conversion is possible with your sub.

You can get the above details listed in the user manual of your subwoofer model and type. Additionally, you can check details online or with the manufacturer.

  • Connection Type: Usually wireless subwoofer kits have Bluetooth and or Wi-Fi connection types. The difference is basically the limitations to their range (distance between the audio sources). When connecting the wireless audio systems, Bluetooth wireless subwoofer kit usually offers short-to-medium range as Wi-Fi connectivity can offer more extended range.

It’s purely the users’ choice to opt from different wireless connectivity options, however, Bluetooth is most commonly used in audio systems.

Let us begin with the steps to convert your standard subwoofers into wireless units.

Step 1: Dedicate the best spot for subwoofer placement

find a spot for your subwoofer

The placement of a subwoofer in the right spot is crucial for optimal and balanced sound quality.

Depending on your room type dedicate a spot where it can deliver the best bass effects.

The best way to determine the ideal spot is by playing a bass-heavy track and moving the subwoofer around the room.

It can be tedious but it’s a one-time effort you need to put in order to locate the sweet spot for your subwoofer.

This will not only help in delivering excellent sound quality but also eliminate additional wiring from running throughout the room.

Step 2: Connect the Wireless Transmitter

Different wireless transmitters also referred to as Wireless Audio Adapters may require different connection types.

However, the steps to connect them are usually common for most wireless transmitter types.

Additionally, if you have the option to directly connect to the AV receiver and the transmitter that will make your task easy.

In case you have a two-channel stereo amp you can still proceed with the connectivity.

Let’s do it one by one.

Connecting transmitter to an AV Receiver

First, you’ll have to locate the subwoofer pre-out or LFE on your AV receiver.

Most of the time, it is labeled by the actual name such as “Sub Out” OR “LFE Out”.

You can use the single RCA cable and attach one end to the AV receiver’s subwoofer pre-out or LFE channel.

Similarly, connect the other end of the cable to the input port of the transmitter.

The kit will also contain a micro-USB cable to connect the wireless transmitter to the power supply provided.

Finally, power the wireless transmitter by plugging it into a wall outlet.

Here’s a quick diagram to visualize the connection (to make a a wired subwoofer wireless):

wired to wireless connectivity diagram

Connecting the transmitter to a two-channel Stereo Pre-amp

If you don’t have a single subwoofer pre-out, you can still connect the wireless subwoofer kit.

In a 2-channel stereo pre-amp, you will find the L/R line level pre-outs to connect the left and right channel audio signals output.

With the help of a dual RCA adapter cable, connect one end to the stereo pre-amp’s L/R line level pre-outs.

Likewise, you can connect the other end of the cable to the input port of the wireless transmitter.

Next, connect the wireless transmitter to the provided power supply using the micro-USB cable (as we did while connecting the AV receiver).

Step 3: Connect the Wireless Receiver to the Subwoofer

Connecting the wireless receiver to the subwoofer will depend on your setup such as it will vary between AV receivers and two-channel stereo pre-amps.

Let us go through the setup for both types.

For AV processor or receiver setups, you can start by linking the single RCA adapter cable between the LFE input on your subwoofer and the output on the wireless receiver.

For two-channel stereo pre-amps, simply connect the dual RCA adapter cable to both ‘L’ and ‘R’ inputs on your subwoofer, and the other end into the wireless receiver’s output.

Next, connect one end of the micro-USB cable to the wireless receiver, and the other end to the provided power supply.

Step 4: Pairing the Transmitter and Receiver

This is the most important step for your wireless audio setup i.e., pairing or synchronizing the transmitter and receiver. 

To ease the task of manually pairing these components, the manufacturers make sure that they are pre-synchronized.

It means the wireless receivers and transmitters will effortlessly pair once you connect and power them on.

You will notice a different signs of pairing depending on the make and model of your subwoofer kit.

In some devices you will see a steady light on both the transmitter and receiver whereas in some devices you may only see a steady light on either one device.

This indicates they are paired successfully and for any confusion simply refer to the instructions on the wireless kit manual.

After the successful connection, you’re all set to experience immersive and powerful bass in your home theater or audio system wirelessly.

Last but not least, you will need to test the connectivity that we have mentioned in the next step below.

Step 5: Testing the Wireless Connectivity

You can test the wireless connectivity between the audio devices (receivers and transmitters) along with their range (distance between the two devices).

Start by playing your favorite audio tracks to check the sound quality, especially the bass effects.

If you are able to hear balanced sound without compromising the quality it means you have a steady connection.

You can move around to different corners of the room to determine if there are impacts on the wireless audio signals.

If you hear clipping or sound distortion at a specific spot, it simply means that is not an ideal spot or it’s out of the connectivity range.

That being said, you also need to make sure that the main speakers and subwoofers are in proper sync.

Final Thoughts

Converting a standard subwoofer to a wireless is beneficial with limited downsides.

Wireless subwoofer kits can be used with most audio systems, however, choosing the right kit is also important for better results.

You should follow the instructions thoroughly in order to connect the wireless receivers and transmitters to your respective audio input and output units.

Armed with a Diploma in electrical engineering and a remarkable 12 years of expertise, he excels in rejuvenating music systems, washing machines, dryers, and laundry-related appliances. Manish's profound insights and practical know-how establish him as a credible authority in appliance and music system repairs. Contact: manish.singh (at) subwooferblog.com. He's always ready to lend a helping hand!