[Q] Rattling sound coming from speaker — is this normal? topic

I'm noticing a rattling sound coming from my Nexus 6 when the sound is at a high volume, and something percussive (like piano music) is playing.

I put up a video on Youtube as an example, but unfortunately the forum software won't let me post a link. However, you can view the video by pasting "/watch?v=0lEw9zd2BCI" on the end of YouTube's URL.

As a point of comparison, I also tested my old Galaxy S III, which despite being almost three years old, doesn't have as much noise as the Nexus 6's speaker (although it does have a small amount).

I'm also hearing a rattle with the default alarm tone. Is anyone else seeing this, and is it worth RMAing over?

Thanks!