How to Connect a Soundbar with RCA Cables

What you need for an RCA connection

RCA audio uses the familiar red and white phono plugs that have been on TVs and audio gear for decades. It carries a two-channel (left and right) stereo signal as an analog waveform, making it a straightforward choice for older equipment.

You need a TV with either RCA audio output jacks or a headphone-style jack, and a soundbar with an analog input. Most soundbars label this input AUX, Line In, or Analog. If your soundbar lacks an analog input, you cannot use RCA; see Soundbar Inputs and Outputs for an overview of the ports to look for.

You also need the correct cable. A standard RCA-to-RCA cable has two plugs on each end. If the TV only has a headphone jack, you need a headphone-style-to-RCA cable instead.

• TV with RCA audio out or headphone jack
• Soundbar with an analog (AUX) input
• RCA-to-RCA or headphone-to-RCA cable

Step 1: Find the audio outputs on your TV

Look on the back or side of the TV for a pair of round jacks, usually red and white, labeled Audio Out, Line Out, TV Out, or simply L/R. If you see those, the TV has a dedicated stereo output ready for a soundbar.

On some sets the same row of jacks is shared between input and output, or the audio jacks sit next to component video connectors. Check the labels printed on the panel or the TV manual to confirm the correct position before plugging in.

If there are no RCA output jacks, look for a headphone-style jack. Many TVs that skip RCA output still include one, and it functions as a stereo output with the right cable.

Step 2: Choose the right cable and connect

Two cable setups cover nearly every case. If the TV has RCA output jacks and the soundbar has a matching analog input with red and white jacks, use an RCA-to-RCA cable, the kind with a pair of plugs on each end.

If the TV only has a headphone jack, use a headphone-style-to-RCA cable, with the small plug on one end and red and white plugs on the other. Match red to red and white to white at both ends. If the soundbar has only a single headphone-style analog input, use a headphone-style-to-headphone-style cable instead.

Plug the TV end first, then the soundbar end. Push each plug in until the ring seats fully; a loose plug is a common cause of a missing channel or a hum. The same seating tip applies to the digital connections described in Optical vs HDMI for Soundbars.

Step 3: Set the TV to output sound externally

Open the TV audio or sound settings menu and look for a setting named Audio Out, External Speaker, Speaker Selection, or similar. Change it from TV Speaker to External, Audio Out, or Headphone, depending on what the menu offers.

On many sets, plugging a cable into the headphone jack automatically mutes the internal speakers. On sets with dedicated RCA output, you usually have to choose the external output in the menu.

If the RCA jacks are shared between input and output, some TVs require the volume to be above zero for the output to carry a signal. Start with the TV volume at a moderate level so you can hear whether sound is getting through.

Volume control and sound quality

RCA carries line-level analog audio, so both the TV and the soundbar can affect the final level. If the TV output is labeled Variable, the TV remote controls the effective volume. If it is Fixed, use the soundbar remote or its buttons.

Because RCA is stereo only, you get two channels of sound from a single bar. That suits a 2.0 or 2.1 model well. It will not deliver the multichannel layouts described in Soundbar Channel Numbers Explained.

Set a comfortable listening level. The National Institute on Deafness and Other Communication Disorders notes that sounds at or below 70 A-weighted decibels are unlikely to damage hearing, and that long or repeated exposure at or above 85 dBA can. If dialogue is hard to follow at moderate volume, look for a bar with a center channel or a dialogue setting instead of turning the whole system up; see Center Channel Explained.

When to consider other connections

RCA works fine for stereo content from a VCR, DVD player, or older TV tuner. But it cannot carry the high-bandwidth signals that modern digital connections handle, such as Dolby Atmos or DTS:X. If your TV has an HDMI ARC port, that connection supports multichannel audio and CEC control, as explained in HDMI ARC vs Optical for Soundbars.

Bluetooth offers a wireless alternative if your TV has no audio output at all and your soundbar supports it. Bluetooth Classic is designed for point-to-point audio streaming and works well for music and general TV sound, though it may add a slight delay; see Soundbar Bluetooth for details.

For a surround sound setup with rear speakers, you will likely need a digital connection. A 5.1 or 7.1 soundbar relies on HDMI or optical to receive compressed surround soundtracks; see Best Surround Sound Bars in 2026 for examples that include the required inputs.

What to pick for your use

Questions

Can I use RCA for surround sound?

No. RCA carries only two channels (left and right), so it cannot deliver the left, center, right, surround, and subwoofer channels of a surround soundtrack. For that you need a digital connection like HDMI ARC or optical.

Why is there no sound after connecting?

Check that the TV is set to output to external speakers, the RCA plugs are fully inserted into the correct jacks, and the soundbar is on the AUX or Line In input. Also make sure the TV volume is not at zero, since some TVs require that for the fixed output.

Is RCA better than using a headphone jack?

Both are analog stereo connections. A dedicated RCA output often has a fixed voltage level and may produce a cleaner signal than a headphone output, which is designed to drive headphones and may vary with volume. In practice, either works well for a soundbar.

Can I connect both RCA and optical at the same time?

You can physically connect both, but use only one at a time. If you select the wrong input on the soundbar you may get no sound or a hum. The optical connection (if available) is preferable for digital audio from the TV.

Does RCA support Dolby Atmos?

No. Dolby Atmos requires a digital connection that can carry object-based audio metadata, typically over HDMI eARC or in a compressed form over HDMI ARC or optical. RCA cannot transmit that data.

What if my TV has only one RCA output for audio and the soundbar has multiple inputs?

That is fine. Plug the RCA cable into the TV output, then select the corresponding AUX input on the soundbar using its remote or the input button. Consult the soundbar manual to see which input number matches the physical jack you used.