Most Samsung soundbars connect to a subwoofer wirelessly through Bluetooth pairing, not with a cable
Samsung soundbars ship with a matching subwoofer that pairs automatically when you turn both on for the first time. If the subwoofer does not connect on its own, or if you are adding a new subwoofer later, you will need to put the soundbar into pairing mode and then trigger pairing on the subwoofer. The exact steps depend on your soundbar model, but the process takes about two minutes and requires no cables between the two devices.
Some older Samsung soundbar models use a wired connection instead—usually a single RCA cable or 3.5mm audio jack running from the soundbar to the subwoofer. Check your soundbar's manual or the back panel to see which connection type yours uses. If you see a port labeled "Sub Out" or "Subwoofer," a cable connection is required.
Key Takeaways
- Most Samsung soundbars pair wirelessly with their subwoofer using Bluetooth, with no cable needed between them.
- New subwoofers pair automatically when turned on together, but manual pairing through the soundbar menu takes about two minutes if automatic pairing fails.
- Older Samsung models may require a single RCA or 3.5mm cable from the soundbar's "Sub Out" port to the subwoofer's input.
- The subwoofer should be placed within 10 feet of the soundbar for a reliable wireless connection.
Automatic pairing when you first set up the soundbar
When you unbox a new Samsung soundbar and subwoofer together, they are designed to find each other automatically. Turn on the soundbar first, then turn on the subwoofer within 30 seconds. The subwoofer's LED light will blink while it searches for the soundbar, then turn solid when the connection is made. This usually happens within 10 to 15 seconds.
If the subwoofer's light stays blinking or turns red after a minute, the automatic pairing did not work. Move the subwoofer closer to the soundbar—within 6 feet—and try again. If it still does not connect, move on to manual pairing through the soundbar menu.
Manual pairing through the soundbar settings menu
To pair a subwoofer manually, press the Menu button on your Samsung soundbar remote. Use the arrow buttons to navigate to Sound or Audio, then look for an option called Subwoofer, Subwoofer Connection, or Pairing. The exact menu name varies by model.
Select the subwoofer pairing option and the soundbar will enter pairing mode for about 60 seconds. During this time, press and hold the Pairing or Connect button on the back of the subwoofer for 3 to 5 seconds until its LED blinks. The subwoofer will search for the soundbar and connect. Once the LED turns solid, the pairing is complete.
If you cannot find a pairing option in your soundbar menu, check the manual that came with your model. Some Samsung soundbars use a different menu structure, and a few older models do not support manual pairing at all—those require a wired connection instead.
Positioning the subwoofer for the best connection
Place the subwoofer within 10 feet of the soundbar for a stable wireless connection. The subwoofer does not need to be in the same room, but walls and metal objects between them can weaken the signal. If the connection drops frequently, move the subwoofer closer or remove obstacles between it and the soundbar.
The subwoofer can sit on the floor, in a corner, or on a shelf—its position does not affect the wireless pairing. However, corner placement usually produces the best bass sound because the walls amplify low frequencies. Avoid placing it directly against a wall if you want a more balanced bass response.
Wired connection for older Samsung soundbar models
If your soundbar has a port labeled Sub Out, Subwoofer Out, or Audio Out on the back panel, you will need a cable. Use a single RCA cable (the kind with red and white plugs) or a 3.5mm audio cable, depending on which port your soundbar has. Plug one end into the soundbar's output port and the other end into the subwoofer's input port, usually labeled In or Audio In.
Once the cable is connected, turn on both devices. The subwoofer should power on automatically when the soundbar turns on. If it does not, check that the cable is fully inserted into both ports and that the subwoofer's power switch is in the on position.
Troubleshooting a subwoofer that will not connect
If the subwoofer still will not pair after manual pairing, try resetting both devices. Unplug the soundbar and subwoofer from power for 30 seconds, then plug them back in. Wait for both to fully power on, then attempt pairing again.
If the subwoofer pairs but then disconnects frequently, move it closer to the soundbar and away from other wireless devices like routers or microwaves. These devices can interfere with Bluetooth signals. Also check that the subwoofer's battery is not low if it is a wireless model—a weak battery can cause connection drops.
For soundbars with a wired connection, make sure the cable is not damaged and both ends are pushed firmly into their ports. A loose or damaged cable will cause the subwoofer to produce no sound or cut out intermittently.
Adjusting subwoofer volume after connection
Once the subwoofer is connected, you can adjust its volume through the soundbar remote or menu. Press Menu on the remote, navigate to Sound, and look for Subwoofer Level, Sub Volume, or Bass. Use the arrow buttons to increase or decrease the subwoofer's output. Most Samsung soundbars let you set the subwoofer volume from 0 to 10.
If you do not see a subwoofer volume control in the menu, your soundbar may not support independent subwoofer adjustment. In that case, the subwoofer volume is controlled by the overall soundbar volume. Some subwoofers also have a physical volume dial on the back panel—you can use that to fine-tune the bass level without opening the menu.
Frequently Asked Questions
Do I need a cable to connect a Samsung soundbar to a subwoofer?
Most modern Samsung soundbars connect wirelessly and do not need a cable. Older models may have a "Sub Out" port that requires a single RCA or 3.5mm cable. Check the back of your soundbar to see which type you have.
Why is my subwoofer not showing up in the soundbar menu?
If the subwoofer does not appear in the pairing menu, it may already be paired to a different device or its battery may be low. Reset both the soundbar and subwoofer by unplugging them for 30 seconds, then try pairing again. If the menu option still does not appear, your soundbar model may not support manual pairing.
Can I use a non-Samsung subwoofer with my Samsung soundbar?
Some third-party subwoofers work with Samsung soundbars if they support standard Bluetooth pairing, but compatibility is not may provide. Check the subwoofer's manual to see if it lists Samsung soundbars as compatible. Wired connections are more likely to work with non-Samsung subwoofers than wireless pairing.
How far can the subwoofer be from the soundbar?
For wireless pairing, keep the subwoofer within 10 feet of the soundbar. Walls and metal objects can reduce the range, so if you need to place it farther away, move it closer to the soundbar to establish the connection first, then move it back to its final location once pairing is complete.
What does it mean if the subwoofer LED is blinking red?
A red blinking LED usually means the subwoofer is not paired or has lost its connection to the soundbar. Try moving it closer to the soundbar and restarting the pairing process. If the LED stays red after pairing, the subwoofer may have a power or hardware issue.