To connect an Onn soundbar to a Roku TV, you have three options: HDMI ARC, optical cable, or Bluetooth. Setup takes minutes, and the best method for high-quality, synchronized audio is HDMI ARC, which also lets your Roku remote control the soundbar's volume.
Locate the audio ports on your Roku TV
Before connecting a soundbar, identify the audio output ports on your Roku TV. Look for a port labeled "HDMI ARC" or "ARC", this is the preferred connection. If that is unavailable, find the "OPTICAL OUT" or "Digital audio out" port, which is a small square or rectangular opening. Some Roku TVs also include a 3.5mm headphone jack labeled "AUDIO OUT." These ports are typically on the back or side of the TV.
Connect with HDMI ARC (recommended)
For the best audio quality and control, use an HDMI cable. Plug one end into the HDMI ARC port on your Roku TV and the other end into the HDMI ARC or HDMI Out port on your Onn soundbar. After connecting, enable CEC on your Roku TV by going to Home > Settings > System > Control other devices (CEC). Ensure "System audio control" and "1-touch play" are checked. This allows your Roku remote to manage the soundbar's power and volume. If you're using a Roku streaming device instead of a built-in Roku TV, you can connect a soundbar to Roku stick for a similar simplified audio setup. If you have a different TV brand, the steps to connect onn soundbar to Vizio TV follow a similar HDMI ARC process with its own menu settings.
Connect with an optical cable
If your Roku TV lacks an HDMI ARC port, use an optical cable. Connect the cable from the TV's "OPTICAL OUT" or "Digital audio out" port to the Onn soundbar's "OPTICAL" input. Then configure the TV's audio settings by navigating to Settings > Audio > S/PDIF and ARC. Select "Auto detect" or "Optical" as the digital audio output. This ensures the TV sends audio through the optical connection.
Connect via Bluetooth
For a wireless connection, pair your Onn soundbar via Bluetooth. On your Roku TV, go to Settings > Remotes & devices > Add device > Wireless speaker (if available) or Bluetooth device list. Select your Onn soundbar from the list to complete pairing. Ensure your Roku TV is running Roku OS 10.0 or higher by checking Settings > System > System update for optimal compatibility.
Set up the soundbar on your Roku TV
- Turn on both the Roku TV and the Onn soundbar.
- Using the soundbar's remote, select the correct input source, choose "HDMI," "ARC," or "Optical" depending on your connection method.
- On your Roku TV remote, press Home, then navigate to Settings > Audio. Set the audio output to match your connection (e.g., HDMI ARC or Optical).
- Verify the TV's software is up to date by going to Settings > System > System update.
Adjust sound modes for the best audio
To fine-tune the audio, press the Star button on your Roku remote during playback. This opens Sound settings or Volume modes, where you can select presets like Music, Movie, or Talk. These modes optimize the soundbar's output for different content types, such as enhancing dialogue in movies or balancing music playback.
Test your connection
Play any movie, show, or music on your Roku TV. Listen for clear, balanced audio coming from the Onn soundbar. If you notice a delay between the on-screen action and the sound, adjust the audio delay settings in the TV's audio menu. Test different content types to confirm the soundbar handles stereo and surround audio without issues. Once synchronized, your setup is complete.
