Chosen Solution
https://youtu.be/B6eXSFtE2NE Here is a video of the speaker, can anyone tell me what is wrong with it?
If your JBL Flip 4 is making buzzing, crackling, or distorted noises, see the JBL Flip 4 Makes Crackling Noise problem page for possible problems and solutions. Two words - dead driver. The unit will require a teardown and some soldering. Guide at: JBL Flip 4 Front Active Speaker Replacement
Your Youtube video seems to be no longer available but I can confirm that I’ve had crackling noises in combination with battery issue with my flip 4 and a battery replacement was the solution, it seems when the drivers cant get enough power they start to crackle.
