Mistakes in the video: No.1 bolt is close to the one I pointed, the one I pointed was a screw holding I/O board, not motherboard. If you can hear disturbing rattle/cracking sounds especially when playing music with great bass when the volume more than 3/4 of max volume? In my case rattling sound came from left side (use Audio MIDI setup tool to find out which speaker is rattling). Is your MacBook's Internal Speaker Blown and do you need to buy a new speaker? In this video I'll show you how I fixed my crackling speaker without buying a new one.
It applies if:
¶ a speaker having Buzzing/Crackling/Interference/Distortion Noise
¶ MacBook's right speaker constantly popping
¶ Suddenly popping, crackling sound
¶ Speaker replacement made sound even worse
¶ The speaker cone is damaged

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