The basic connection process
Most Vizio subwoofers connect to Vizio soundbars wirelessly through a pairing process that takes about two minutes. You power on both devices, press and hold the pairing button on the subwoofer until a light blinks, then press the pairing button on the soundbar. The two devices find each other automatically and stay connected until you unpair them.
The exact location of pairing buttons varies by model. On many Vizio subwoofers, the button is on the back panel near the power cord. On soundbars, it is often on the bottom or back, sometimes recessed so you need a small tool to reach it. Check your manual or the underside of the device for a label showing where the button is.
If your soundbar and subwoofer are different Vizio product lines or several years apart in age, wireless pairing may not work. In that case, you can connect through your TV or receiver instead, which acts as the middleman between the two devices.
Key Takeaways
- Wireless pairing is the standard method: power on both devices, hold the subwoofer pairing button until it blinks, then press the soundbar pairing button.
- Pairing buttons are usually on the back or bottom of each device and may be recessed or require a paperclip to press.
- If wireless pairing fails, you can route audio through your TV or receiver to connect the subwoofer indirectly.
- Once paired, the subwoofer stays connected automatically when both devices are powered on, with no need to re-pair each time.
Finding the pairing buttons on your specific model
Vizio soundbars and subwoofers do not always label pairing buttons the same way. Some models call it "Pairing," others call it "Connect" or "Pair." The button itself is sometimes a physical button you can press with your finger, and sometimes a recessed hole that requires a straightened paperclip or the tip of a pen to activate.
The subwoofer pairing button is almost always on the back panel, near the power input. Look for a small circular button or hole. The soundbar button is trickier: it may be on the back panel, on the bottom, or hidden under a rubber cover on the front. If you cannot find it by looking, check the manual that came with your soundbar or search for your model number plus "pairing button" on Vizio's support website.
Write down or photograph the location of both buttons before you start. This saves time if the pairing does not work on the first try and you need to repeat the process.
Step-by-step wireless pairing
Start with both devices powered off. Plug in the subwoofer and the soundbar, but do not turn them on yet. This ensures both are starting from a clean state.
Power on the subwoofer first. Wait about 10 seconds for it to fully boot. You should see a light on the front or back of the unit — this is usually white or blue when the subwoofer is ready.
Press and hold the pairing button on the subwoofer for about 3 to 5 seconds. The light should begin blinking or change color, usually to blue or amber. This means the subwoofer is in pairing mode and listening for a soundbar.
While the subwoofer light is blinking, power on the soundbar. Press and hold its pairing button for 3 to 5 seconds as well. The soundbar will search for the subwoofer. Within 10 to 20 seconds, both devices should stop blinking and show a steady light, which means they are paired.
If the lights go back to normal but the subwoofer still does not produce sound, the pairing may have failed. Power both devices off, wait 30 seconds, and try again. Make sure you are pressing the correct buttons and holding them long enough.
What to do if wireless pairing does not work
If the subwoofer and soundbar will not pair wirelessly, the first thing to check is whether they are compatible. Vizio soundbars and subwoofers from very different product lines or release years sometimes cannot pair with each other. Check the model numbers on both devices and search Vizio's support site to see if they are listed as compatible.
If they are compatible but still will not pair, try a factory reset on both devices. Most Vizio subwoofers reset when you hold the pairing button for 10 to 15 seconds — longer than the normal pairing hold. The soundbar may have a separate reset button or require you to unplug it for 30 seconds. After resetting both, try the pairing process again from the beginning.
If wireless pairing still fails, you can connect the subwoofer through your TV or AV receiver instead. Run the soundbar's audio output to your TV or receiver, then connect the subwoofer to the same device. This way, both the soundbar and subwoofer receive audio from the same source, even if they are not directly paired with each other. You will lose some convenience — the subwoofer will not turn on and off automatically with the soundbar — but the audio will work.
Adjusting subwoofer volume and settings after pairing
Once the subwoofer is paired, you control its volume through the soundbar's remote or app, not through a separate subwoofer remote. Most Vizio soundbars have a dedicated subwoofer volume button on the remote, or you can adjust it through the soundbar's menu settings.
If the subwoofer is too loud or too quiet, use the soundbar remote to find the subwoofer level control. This is usually in a settings menu labeled "Audio," "Subwoofer," or "Bass." Adjust the level up or down in small increments and test with music or a movie scene with bass. A good starting point is around 50 percent of the maximum volume.
Some Vizio soundbars also let you adjust subwoofer settings through a mobile app. Download the Vizio SmartCast app on your phone, connect it to the same Wi-Fi network as your soundbar, and look for audio or subwoofer controls. Not all models support this, so check your soundbar's manual to see if an app is available.
Troubleshooting common connection problems
If the subwoofer is paired but produces no sound, check that the soundbar itself is outputting audio. Play music or a video and listen to the soundbar speakers. If the soundbar is silent too, the problem is not the subwoofer connection — it is the soundbar input or source. Switch the soundbar to the correct input (HDMI, optical, or Bluetooth) and try again.
If the soundbar plays but the subwoofer does not, the pairing may be incomplete. Power off both devices, wait 30 seconds, and power them back on. Sometimes the connection drops if one device loses power or restarts unexpectedly. A full power cycle often restores it.
If the subwoofer cuts out during use or only works intermittently, move it closer to the soundbar. Wireless connections can be blocked by walls, metal objects, or other electronics. If moving it is not possible, try repositioning the soundbar or subwoofer to reduce obstacles between them. Microwaves and cordless phones can also interfere with the wireless signal, so move those devices away if they are nearby.
Frequently Asked Questions
Can I use a Vizio subwoofer with a non-Vizio soundbar?
Not through wireless pairing. Vizio subwoofers are designed to pair only with Vizio soundbars. If you have a different brand soundbar, you can connect the Vizio subwoofer through your TV or receiver as a workaround, but the subwoofer will not pair directly with the non-Vizio soundbar.
Do I need to pair the subwoofer every time I turn on my soundbar?
No. Once paired, the subwoofer stays paired permanently until you unpair it or reset one of the devices. When you power on the soundbar, the subwoofer should connect automatically if it is also powered on. You only need to repeat the pairing process if the connection drops or you want to pair the subwoofer with a different soundbar.
What if my subwoofer has a power button but no pairing button?
Some older or budget Vizio subwoofers do not have a dedicated pairing button. Instead, they pair automatically when powered on near a compatible soundbar. Try powering on the subwoofer while the soundbar is already on and within a few feet. If that does not work, check the manual for your specific model, as pairing may work differently.
How far can the subwoofer be from the soundbar?
Most Vizio wireless subwoofers work reliably within 30 feet of the soundbar, though the connection is strongest within 15 feet. Walls and large metal objects reduce the range. If your subwoofer keeps losing connection, try moving it closer to the soundbar or removing obstacles between them.
Can I pair two subwoofers to one Vizio soundbar?
Most Vizio soundbars support only one subwoofer at a time. If you try to pair a second subwoofer, it will unpair the first one. Check your soundbar's manual to confirm, as a few higher-end models may support multiple subwoofers, but this is uncommon.