Trying to hook up Logitech Z506 to Smart TV LG 43UH6107 via RCA cables(white&red both ends)

[serbanica.stefan]

Trying to hook up Logitech Z506 to Smart TV LG 43UH6107 via RCA cables(white&red both ends) and it does not work in any way. Went to tv settings (sound) and selected Audio out(optical/hdmi) . I even tried different RCA cables and it still does not work. How can I connect them tho? I have wasted about 3 hours trying to figure it out.

 

[americanaudiophile]

The TV doesn't have any outputs with RCA jacks. Only inputs.
You can use the headphone out.