Hi
BaLLzl3! I apologize for the sound issues you've experienced in Rainbow Six Siege. Firstly, can you please try clearing the cache on your Xbox? To do this, unplug your console from the wall, wait at least two minutes, then plug it back in and restart your game. If that doesn't help, you could try the other steps in
this guide! Then, please be sure to report these sound bugs on
R6Fix. The development team frequently uses this site to track bugs and glitches that players have reported themselves. It's a great resource to utilize!