internet failure

If the internet goes down, can I still use my Arc, Sub and SL One surround speakers?  Or do they always have to have internet to work correctly?

I have the system all set up and working properly, and have 700 mbps on my internet down and up speeds with fiber, but was wondering if I’d lose the use of the speaker system during an internet failure.

 If I understand correctly, my Arc should work fine with the EArc hdmi to the TV, but will the sub and SL one surround speakers continue working without the internet?  My apologies if I’m sounding redundant with my question, I just wanted to clarify.