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Here Are Some Simplea Ways To Fix The Issue!  

Are You Also Facing the Annoying Cracking Sound Issue on Your Mac? 

Clean The Dust: Collected dust in the speaker grills can disrupt the sound. After checking that your MacBook is turned off and unplugged, use a soft brush or canned air to clean the speakers gently.

Restart Your Mac: Restarting can often solve temporary audio issues by resetting system processes and clearing minor glitches.

Check Audio Settings: Open System Preferences and go to Sound. Ensure the correct output device (e.g.,speakers, headphones) is selected and that the volume levels are appropriate.

Update MacOS: Make sure your macOS is up to date. Updates often include fixes for bugs that might affect audio performance.

Check Audio Cables: If you're using external speakers or headphones, check that all cables are securely plugged in and not damaged 

Test With Different Apps: You can check if the issue occurs across all applications or just specific ones. This can help identify if the problem is app-specific or system-wide.

Run Apple Diagnostics: Restart your Mac and hold down the D key to start Apple Diagnostics. This tool checks for hardware issues and helps to solve them.

Check For Hardware Issues: If none of the above solutions work, there might be a hardware issue with your speakers or internal audio components.