Hit the home button, the choose home dashboard, highlight and choose hdmi 2, then tap the circle with a little plug symbol on the top. Create new connection under hdmi 2 in the next screens identify the sound system to the TV and it will fix your issue. Look at the attached photos. I had to setup my Sonos Arc this way as well.
Bose Bass Module 700 Wireless Subwoofer Black 809108-1100 - Best Buy. from $632.99. Choose a store for pickup availability. User rating, 4.7 out of 5 stars with 3726 reviews. User rating, 4.4 out of 5 stars with 1771 reviews. User rating, 4.6 out of 5 stars with 1072 reviews.
dVtVx.