Definitive Technology Subwoofer not Working (Solved!)

If you’re a fan of quality audio, chances are you’ve heard of Definitive Technology. Known for its high-quality speakers and subwoofers, it is a name that’s synonymous with great sound. But what do you do if your Definitive Technology subwoofer stops working?

The potential causes of a Definitive Technology subwoofer not working include problems with the power source, internal wiring or components, connection to the receiver or amplifier, or settings on the receiver or amplifier.

Don’t worry, we’re here to help. In this blog post, we’ll walk you through a few troubleshooting tips such as checking the power cables and the receiver and many more, to help you get your subwoofer up and running again in no time.

How to Fix a Definitive Technology Subwoofer That Isn’t Working

By going through these quick steps, you can figure out if your subwoofer is faulty or if the challenge lies somewhere else.

Before beginning, ensure that you power down all elements, the subwoofer included. The best way to avoid damaging your device is by never connecting or disconnecting cables while the power is still on.

Check the Power Cables:

Check all the wires of Definitive Technology
Check all the wires of Definitive Technology

First things first, check to make sure that all of the power cables to your subwoofer are securely plugged in. It’s not uncommon for a loose cable to be the reason why a subwoofer isn’t working. If everything looks good on the power front, move on to the next step. 

In addition to that, if you notice any new strange noises or lights coming from your subwoofer, this likely means there is a power issue.

Check Your Receiver:

If your subwoofer still isn’t working, the next thing you’ll want to do is check your receiver. In particular, you’ll want to make sure that the receiver is set to “Subwoofer On” and that the volume is turned up high enough. Actually, people forgetting to turn on their subwoofers is pretty common.

If your receiver is set to “Subwoofer Off”, simply toggle the switch to “Subwoofer On” and see if that does the trick. If it doesn’t, increase the volume until you start hearing sound coming from the subwoofer. Just be careful not to turn it up too high–you don’t want to blow out your speakers! 

Check Your Crossover Settings:

If you’re still not hearing any sound from your subwoofer, it’s time to check the crossover settings. The crossover setting determines what frequencies are sent to which speakers. For example, if your crossover setting is too low, you may not be sending any low-frequency sounds to your subwoofer–which means you won’t be hearing any bass! 

To fix this, simply adjust the crossover setting on your receiver until you start hearing sound coming from your subwoofer. The suggested frequency range to set the crossover network is anywhere from 80Hz to 120Hz. Try different settings until you find one that suits your taste.

Check the menu configuration:

Oftentimes, people overlook this setting; however, it is key to making your subwoofer work. The menu configuration differs based on the receiver brand.

To ensure that your music will have an excellent quality, go into the menu and select “Small” or “Yes” for the “Subwoofer” setting. If you follow these instructions, your receiver will send only low-frequency sounds to your subwoofer.

Check the Phase Settings:

If, after completing the earlier steps, you still don’t hear any sound coming from your subwoofer, it’s time to check the phase settings. The phase setting on a subwoofer allows you to control when the subwoofer creates sound in comparison to your other speakers. Without the proper phase setting, you might not be able to hear any bass and your subwoofer might sound muddy. 

To remedy this, adjust the phase setting on your receiver until sound starts emanating from your subwoofer. Usually, we suggest setting the phase to 0 degrees. Keep experimenting until you find a setting that sounds pleasant to you.

By following these steps, you will be able to get your Definitive Technology subwoofer up and running in no time.

Tips for Proper functioning of your Definitive Technology subwoofer

If your definitive technology subwoofer isn't working, you may need to replace it

Definitive Technology subwoofers are designed to reproduce the deepest, most powerful bass possible. But even the best subwoofer can’t perform at its best if it isn’t set up correctly. Use these tips to make the most out of this product:

1. Position your subwoofer correctly

For the perfect bass response, your subwoofer should be placed in a corner of the room. This will help to increase the bass output by “loading” the corner of the room. If you can’t place your subwoofer in a corner, try to place it as close to a wall or other flat surface as possible.

2. Make sure to use the appropriately sized speaker wire

For an ideal audio experience, use a speaker wire that is as thick as your receiver can easily bear. By doing this, you will decrease the amount of sound quality that is lost between your receiver and subwoofer.

3. Adjust the Frequency range

A subwoofer’s frequency range is usually 20-200 Hz. The operating frequency of most professional concert sound system subwoofers is under 100 Hz, and THX-certified systems function at an even lower frequency of 80 Hz.

All in all, If you can’t figure it out, check your product’s manual or reach out to a professional installer. Although it may take some time to adjust, you can have excellent sound from your subwoofer with a little work.


Q: How do I reset my Definitive Technology subwoofer?

A. If your Definitive Technology subwoofer is not performing as it should be, you may need to reset it. To fix this, unplug the power cable from the subwoofer and plug it back in again. After a brief wait for the subwoofer to power up, test it to see if the problem has dissipated.

Q: How do I pair my Definitive Technology subwoofer?

A. To pair it with other devices, press Bluetooth the button on the back of it. The light will start flashing indicating that it is in pairing mode. Please then go to the Bluetooth settings on your device and select “Definitive Technology” from the list of available devices.

Q: Are Definitive Technology subwoofers worth the money?

A. This subwoofer is one of the most versatile on the market, and its performance is second to none. This machine is equipped with double surround sound technology, which allows it to deliver powerful and accurate bass. In addition, its unique shape allows it to be placed in a number of different positions, making it ideal for use in a home theater system.

Final Verdict

Before you discard your subwoofer as dysfunctional, verify the power, cords, and settings. It’s possible the subwoofer only appears to be not working when it truthfully is.

Before you drop any money on a new model, do your research to ensure you’re getting the best sound quality for the price.

I truly hope you found this guide helpful. If not, or if you have further questions, please leave a comment below and I’ll reply back to you as soon as possible.