Thank you for messaging the community. I am so sorry to hear that you are experiencing a crackling noise from your SoundLink Color speaker.
So that I can provide you with the most accurate information, can you please inform us if you own the first or second generation of the SoundLink Color speakers. If you are unsure, please take a look at this link to help you identify this.
Can you also confirm for us when you experience this crackling from your speaker?
Please let us know, we would love to do what we can in order to get this resolved for you.