S - series audio connection RCA?

[snipercat420]

Can speaker connection be made on TCL S-305 series with RCA connection?

 

[Alabalcho]

If one believes this TCL S3 series description, your TV has digital optical-out, and headphones-out connectors. So, you're looking for "speakers" with either optical-in, or aux-in connectors.

I'm putting "speakers" in quotes because you will need either an amplifier (if your speakers have just bare wire connection), or a sound-bar (where speakers and amplifier are in a single box).