Using the M1 Pro Macbook Pro 16 to Play movies in Apple TV app will cause the speakers pop when there are very low bass frequencies inside the movie.

You are welcome.

I use macOS Monterey 12.1 as well. I played those two trailers in the Apple TV app and have experienced no internal speaker issues. Not sure whether it is a software issue for you because if it were related to the MacOS then I would have experienced the same. I still recommend having your MacBook Pro diagnosed at the Apple Store.

Axel F.

I have the M1 Pro MacBook Pro 16 in. I simulated the same setup as you mentioned in your post. Apple TV app and monitored sound at various volume levels. I did not hear any popping sound from the built-in speakers.

I recommend that you take advantage of Apple’s 1YR Limited Warranty and have your MacBook Pro examined at the Apple Store or at an Authorized Service Center for further diagnosis and a resolution.

Axel F.