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So my Arc setup is connected RTX3080 → LG C1 eARC → Sonos Arc + 2x One.

How do i get (upmixed) surround sound like 5.1 from PC Browsers like for YouTube/Spotify websites?

Games work fine no matter Dolby Atmos or 5.1 LPCM.

You’d have to check with the manufacturer of your sound card and/or the software you use to play. Sonos doesn’t provide a “upmixing” function in their software. 


Ive got it working with APO Equalizer.