Sound interference on loud speaker, zenfone max pro 2 Video included.

[Alfonso Laguna]

I replaced the speaker and the problem persists, the sound is dirty. I hard reset the phone and the problem stays, I tried to change the OS but I really don't know how to.
Video link with the problem

http://https://youtu.be/Xm-iI8e_TqA

 

[B. Diddy]

Welcome to Android Central! FYI, that YouTube link doesn't work when I click it on my Chromebook.

Does this also happen over wired or Bluetooth headphones?