I have purchased sonos arc and sub 3 days before and looks like sub audio is not up to the mark.
Its not giving me punching feeling.
I changed my setting to
EQ bass +10
Sub audio +. 15
then i get some punchy base, in this setting my room must be shaking but its not.
I checked both sub and arc is firmware is upto date.
I moved sub here and there multiple places in room but same output.
My sub and arc both connected to wifi 2.4Ghz because it automatically takes 2.4Ghz SSID instead 5Ghz. Now days router uses same SSID name for both 2.4Ghz and 5Ghz.
I am really disappointed with soundbar and sub, my 100$ sound bar and sub sound far better than this 1800$ crap.
I was so excited to hear but it ruined my new year.