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(11 Fixes) Vizio Soundbar Subwoofer Keeps Cutting Out

Vizio Soundbar Subwoofer Keeps Cutting Out

Don’t you hate it when you’re watching a movie…

And you can literally hear some parts of the audio missing?

As we know, that can drastically affect your movie experience. 

So, if you want to resolve that problem…

And prevent your Vizio soundbar subwoofer from cutting out…

Continue reading to learn:

  • How to pair a subwoofer to the Vizio soundbar.
  • 11 ways to fix a Vizio soundbar subwoofer that’s cutting out.
  • How to power cycle a Vizio soundbar to fix connectivity issues.
  • Ways to prevent interference between the soundbar and subwoofer.
  • And that’s only the beginning…

Why does my Vizio soundbar subwoofer keep cutting out?

Your Vizio soundbar subwoofer keeps cutting out because the soundbar isn’t properly connected to the source. Or the subwoofer is too far away from the soundbar. Overheating, glitches, interference, and outdated software can also cause the audio from the subwoofer to cut out. 

Vizio soundbar subwoofer keeps cutting out: 11 ways to fix it

#1: Check the connection of the soundbar with the source

Check whether the connection between your soundbar and the source is correct and stable.

Use this checklist as your guide:

  • Are your devices compatible?
  • Is the cable in good condition?
  • Have you changed the TV’s audio output?
  • Is the cable plugged into the correct ports?
  • Have you changed the sound bar’s input source?
  • If connected via Bluetooth, are your devices paired?

If you answer “Yes” to all of the questions, check the other solutions below.

But if you answer “No” to some or all of the questions, resolve the issues immediately.

Editor’s pick: 22 Steps To Connect Vizio Soundbar To Roku TV

#2: Change the sound bar’s input source

You may also try changing the input source of your Vizio soundbar.

Suppose you’ve connected it to your TV via HDMI ARC. Try connecting your soundbar via optical cable or RCA cables.


Doing this allows you to diagnose your devices properly. 

By trying other types of connection, you can assess whether the:

  • Devices are incompatible.
  • Cable connection is faulty.
  • Cable port(s) are worn out or malfunctioning.

If the cable is faulty, you can replace it with a new one.

And if your device’s port is broken, you can ask your device manufacturer for repair.

#3: Relink the subwoofer to the soundbar

Your subwoofer can sometimes get disconnected from your Vizio soundbar.

When that happens, you can just simply relink your subwoofer with your soundbar.

Here’s how to do it:

Note: Some steps may vary depending on your devices’ model.

Step 1: Plug and turn on your devices.

Step 2: Bring the subwoofer closer to the sound bar. Move it about 1 ft (30 cm).

Step 3: Press and hold the “Pairing” button on the subwoofer for about 5 seconds. Or until the LED lights blink.

Step 4: Press and hold the “Power” button on the sound bar for about 10 seconds. Or until the LED lights blink three times. This indicates that your devices are now paired.

You can also watch this video to know where the pairing buttons are located:

#4: Move the subwoofer closer to the sound bar

If your subwoofer is too far away from your Vizio sound bar…

It may fail to receive audio signals from it. And so cause the audio from the subwoofer to cut off every few seconds.

So, consider moving your subwoofer closer to the sound bar. And ensure that there’s a direct line of sight between your devices.

Ideally, your subwoofer should be within a 10 ft (3 m) range from your Vizio sound bar.

#5: Turn off the sound bar’s “Eco mode”

After several minutes of inactivity, your Vizio sound bar will turn into Eco mode. Which turns off your device.

Note: This is also known as the “Energy Star.”

Because of this, your subwoofer can lose connection with your sound bar. Causing the audio coming from it to cut off.

So, to resolve the problem, disable the Eco mode on your Vizio sound bar.

To do that: 

Step 1: Locate the POWER and VOLUME DOWN buttons on the sound bar.

Step 2: Press and hold the buttons for about 5 seconds. Or until the first 4 and last 4 LED lights glow.

Learn more: Why is my Vizio soundbar blinking white?

#6: Power cycle the sound bar

Sometimes, your Vizio sound bar can have electronic glitches and software bugs. And these can cause connectivity issues with your subwoofer.

Thankfully, fixing these glitches and bugs is easy. You just have to power cycle your sound bar.

And here’s how you can do that:

  1. Ensure that the sound bar is ON.
  2. Unplug its cord from the socket.
  3. Press and hold the POWER button for 5 seconds.
  4. Replug and turn ON the sound bar.

Note: After this, make sure to relink it again to your subwoofer. Follow the steps in way #3.

Read also: (13 Fixes) Vizio Soundbar No Sound

#7: Update the sound bar’s firmware

Having outdated sound bar firmware can also cause your subwoofer to cut off audio.

So, make sure to keep your device up-to-date.

You can update its software either:

  • By navigating the sound bar’s settings.
  • By auto-updating it through the Vizio SmartCast app.
  • By plugging in a USB that contains the software update file.

Pro tip: If your sound bar is SmartCast-compatible, connect it to the Vizio SmartCast app

That way, you won’t have to manually update your device every time there’s a new software version.

#8: Leave enough clearances around the sound bar

When your sound bar is overheating, some of its functions may fail to work. And that includes its connectivity to your subwoofer.

That being said, make sure to protect your device from overheating.

One way you can do that is by leaving adequate clearances around your Vizio sound bar. 

Make sure to leave at least 4 in (10 cm) gaps for ventilation.That way, you can keep your sound bar cool even when in use.

#9: Turn off the sound bar for a while

Do you use your Vizio sound bar frequently? Do you keep it powered ON most of the time?

If yes, consider turning it off once in a while. 

The reason: 

When you keep your device turned ON all the time, its components will continue to run. Which can also cause your sound bar to overheat.

Turning it off once in a while allows your sound bar’s components to rest and cool. Plus, it helps keep your device in its tip-top condition.

#10: Remove other WiFi/Bluetooth-enabled devices nearby

WiFi and Bluetooth interference can also cause your Vizio sound bar subwoofer to cut off.

This happens when a nearby device interrupts the signal from the sound bar to the subwoofer.

To prevent connection interference…

Make sure to remove electromagnetic devices near your sound bar and subwoofer.

And this can be a:

  • Headsets.
  • WiFi router. 
  • Baby monitor.
  • Wireless phone.
  • Microwave oven.
  • And other wireless devices.

#11: Factory reset the sound bar

Factory Reset Soundbar

If all things fail, factory reset your Vizio sound bar.

Warning: A factory reset deletes data and custom settings. So, only do this as your last resort. 

Doing this also removes electronic glitches and software bugs that cause connectivity errors. 

Plus, it turns your device settings back to default. Which is a good thing in case you’ve messed up something on its system.

Here’s how to factory reset a Vizio sound bar:

Note: The instructions may vary depending on your device model. So, make sure to check your product manual as well.

Step 1: Find the BLUETOOTH and VOLUME DOWN buttons on the sound bar.

Step 2: Press and hold the buttons for about 5 seconds. Or until all the LED lights blink three times. This indicates that the device has been reset back to its factory default.

If the problem persists, contact Vizio support for repair or replacement.