The SB02 can be used wirelessly via Bluetooth, casting, and streaming. For a wired connection, the only supported option is HDMI (e)ARC.
If no ARC/eARC is available on your TV or audio source, you could connect using an eARC Audio Extractor.
Because these can add complexity to the setup, we do not formally recommend their use and may not be able to support you in their installation.