Find where the crackle follows the sound
- Play the same sound in two apps, then compare the Mac’s built-in speakers with headphones or another output.
- Check the selected output, volume and balance. If only one app or an external speaker crackles, follow that route below.
- Restart and install compatible macOS updates if the built-in speakers crackle across apps.
- If the built-in speakers still crackle, use the diagnostic path your Mac supports and contact Apple for service.
The useful first question is where the noise follows you. We’d compare apps and outputs before changing settings, because a crackle confined to one of them gives you a more useful next check. These first checks work for Mac laptops and desktops with Apple silicon or Intel.
Look the Mac over for signs of liquid damage first. A spill can short internal circuits and make the Mac malfunction, so if you know it got wet, stop these checks and contact Apple for service (opens in a new tab) before charging, restarting or updating it.
- Play the same sound in two apps. If it crackles in only one, follow the app-only route in the table below. If it happens in both, keep checking.
- Play it through the built-in speakers, then through headphones or another available output. If only the other output crackles, follow the external-output route. If only the built-in speakers crackle, continue with their settings.
- Listen at your normal volume, then raise it to a comfortable higher level. Note whether the crackle appears only when you turn it up. Return the volume to a level that sounds clear while you finish the checks.
- Disconnect headphones and external speakers. Open System Settings (or System Preferences) > Sound > Output. Select Internal Speakers, make sure volume is above zero and mute is off, and center the balance slider. If the built-in speakers still crackle, restart and check for updates next.
Follow the result you heard
Use the combination you found in the playback checks to choose the next move. Keep a note of the app, output and volume that produced the noise if you later need service.
| What crackles | What to do next |
|---|---|
| One app or website only | Try the same sound in another app. For a browser page, try it in another browser and check that app’s playback settings. |
| Only at a higher volume | Turn the output volume back down and repeat the same sound. If it also crackles at your normal level, continue with the software and diagnostic checks. |
| One built-in speaker | Center the balance slider in Sound > Output, then compare the same sound across apps. If that side still distorts, continue to diagnostics. |
| Headphones or external speakers only | Check which output is selected and test another output. If the Mac’s built-in speakers sound clear, focus on the external device or connection. |
| Built-in speakers across apps | Restart, install compatible updates, then use the diagnostic path for your Mac. |
For a browser-only problem, try the page in another browser.
If the noise is coming from your phone instead, use our iPhone speaker checks.
Check the speakers the Mac is using
Disconnect headphones and external speakers. In System Settings (or System Preferences) > Sound > Output, select Internal Speakers to test the Mac’s own speakers. Set volume above zero, turn mute off and center the balance slider. Listen again on the side that sounded wrong.
If Internal Speakers is selected and the same crackle remains in more than one app, move to the software check. If only headphones or an external speaker crackle, keep following that output’s route instead.
If the built-in speakers still crackle
Restart the Mac and replay the sound in both apps. If the crackle remains, open Software Update and install the Apple updates compatible with your Mac model, then test the same playback again.
If playback is still distorted through the built-in speakers across apps, the next check is hardware diagnostics. Use the path below for your Mac rather than treating a one-app problem as a speaker repair.
If you can see debris in the headphone jack
On a 2024 or later Mac laptop with Apple silicon, unplug headphones or external speakers and check that nothing remains in the headphone jack. Look for visible debris before cleaning it. For a crackle confined to an external speaker, compare another output first.
If you spot debris, gently clean it out with a small, clean, dry, nonmetallic brush with soft bristles. Use only as many bristles as fit in the jack, twist them to loosen and lift the debris, and brush away from the opening so nothing gets pushed back in. Wipe off whatever comes out with a microfiber cloth.
Use the diagnostic path your Mac supports
Keep diagnostics for built-in-speaker crackling that remains after the playback, settings and software checks. Before starting, disconnect all external devices except the keyboard, mouse, display, Ethernet connection (if applicable) and power connection, and put the Mac on a hard, flat, stable surface with good ventilation. On an Intel Mac, shut it down, then turn it on and immediately hold D as it starts up to enter Apple Diagnostics.
Apple Diagnostics for Repair runs right on a Mac with Apple silicon that can start in macOS, has power and internet, and runs a non-beta macOS Tahoe 26.0 or later. It doesn’t need a second device. Use Apple’s diagnostics steps (opens in a new tab) to enter the test screen. Intel Macs and Macs running a macOS beta can’t use this on-Mac repair route.
If you have an Intel Mac, use the D-key route above. If you have an Apple silicon Mac that can’t use the on-Mac repair route, shut it down, then press and hold the power button (Touch ID on a laptop). When you see Options, release the button, then hold Command-D until the Mac restarts. Tell service which checks you could complete.
If your Mac offers the audio tests
On a 2024 or later Mac laptop with Apple silicon that offers Apple Diagnostics for Repair, run Mac Resource Inspector (MRI) first, then Audio. MRI checks hardware components, and Audio tests the laptop’s speakers and microphones. On other eligible Macs, select Audio if it’s available, follow the on-screen prompts and keep the results. On modular Mac desktops, Audio checks the internal speaker, not a microphone.
Know when the home checks are done
If the built-in speakers still crackle across apps after the settings, update and available diagnostic checks, contact Apple for service through the repair link above. Tell them which apps, outputs and volume levels crackled, which side was affected, and what the diagnostics reported. Leave internal inspection and part replacement to service.
Ask whether your Mac has warranty coverage and request a repair estimate for its model and fault. The Mac laptop limited warranty covers manufacturing issues for one year; a service estimate depends on the issue and warranty status. Ask for the expected turnaround too. A replacement part may not resolve the crackle, so bring the test results before authorizing one.
A few other cases worth checking
What if one browser page crackles?
Play that page in another browser. If the sound is clear there, check the original browser or page before pursuing a Mac speaker repair.
What if only one external speaker distorts?
Check that speaker and its cable or connector. For example, with a Logitech Z623 system, distortion from one speaker can point to that speaker or its cable or connector. That example doesn’t diagnose the Mac’s built-in speakers.
Will replacing a speaker always fix crackling?
No. The repair can involve different speaker assemblies depending on the Mac model, and replacing a part may not resolve the issue. Ask service what the diagnostic results point to before approving a repair.
Should I back up the Mac before service?
Yes. Back it up in case service requires the startup disk to be erased or replaced.
Check that playback is clear
After a setting change, update or repair, play the same sound through the built-in speakers and another output. Connect and disconnect headphones or external speakers, then check that playback is clear and free of distortion on both paths.
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