Some videos on YT and VLC have audio issues (boomy)

[ultraturbomusic]

I noticed a few days ago that some YT videos sound is boomy (only bass and no high frequency tones) and some videos on vlc have the same problem. Win 7 64bit. I recently added my headphones and mic into the front pannel of my pc so that I wouldnt have to insert the cords everytime I need to use the headphones and mic. I began to switch the default playback devices on my pc, but that is it. No new soft, no nothing. just out of the blue this problem occured. Ideas?

PS: On youtube, I noticed that some videos uploaded from smartphones evoke this problem.

 

[rgd1101]

MERGED QUESTION
Question from ultraturbomusic : "Boomy (only Bass) sound on some YT and VLC videos"

I noticed a few days ago that some YT videos sound is boomy (only bass and no high frequency tones) and some videos on vlc have the same problem. Win 7 64bit. I recently added my headphones and mic into the front pannel of my pc so that I wouldnt have to insert the cords everytime I need to use the headphones and mic. I began to switch the default playback devices on my pc, but that is it. No new soft, no nothing. just out of the blue this problem occured. Ideas?