JBL Flip 4, Black - Waterproof, Portable & Durable Bluetooth Speaker - Up to 12 Hours of Wireless Streaming - Includes Noise-Cancelling Speakerphone, Voice Assistant & JBL Connect+
Cash Converters - Jbl Bluetooth Speaker FLIP 4 ***CRACKLING SOUND***
JBL Flip 4 Review | The Master Switch
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Jbl flip 3 crackling sound easy fix, just re-solder the speaker cable. - YouTube
JBL Flip Makes Crackling Noise IFixit | gensoudiary.com