Crackling, clicking, popping or distorted bass does not always mean the speaker is blown. The fault can be the selected output device, app volume, Windows or macOS settings, Bluetooth mode, driver, dust in the speaker grille, liquid damage or a physically damaged speaker.
Start at low volume. Do not keep playing loud bass if the speaker scrapes, rattles, distorts badly or smells burnt. Stop as well if the machine had liquid inside, the battery is swollen, or the sound became bad after a fall or impact. A free diagnosis is safer than opening the machine or testing loudly.
1. Find out where the fault follows the sound
Play the same audio in several apps, for example a browser, Spotify/YouTube and a local audio file. Use low volume first, and test both speech and music with some bass. Note whether the problem affects all sound, only one app, only loud sound, only bass, or only the left/right side.
Then test with wired headphones, an external USB/HDMI audio device or a Bluetooth speaker. If headphones sound clean but the built-in speakers crackle, the fault points toward the speaker, cable, dust, loose plastic or chassis vibration. If both built-in speakers and headphones crackle, it is more often Windows/macOS, the wrong output, audio enhancements, driver, Bluetooth mode or app settings.
If crackling only happens through an HDMI monitor, dock, USB sound device or Bluetooth, the internal speakers are not blown. Disconnect intermediate devices, choose the internal speakers as output and test again at low volume before considering opening the machine or replacing speakers.
2. Choose the right output and volume in Windows 11
Click the speaker icon by the clock and use the arrow next to the volume slider to choose the correct output. Choose internal speakers, for example, not an HDMI monitor, dock, USB headset or Bluetooth device. Also go to Settings > System > Sound > Output and confirm the same device there.
Open Settings > System > Sound > Volume mixer. Check that the app you are testing is not muted, that system volume is not at 100 percent while the app is also pushed high, and that the browser tab or meeting app is not using its own wrong audio device. If only one app crackles, restart that app and check its audio settings before troubleshooting the speaker.
3. Turn off enhancements and test format
Microsoft specifically points to audio enhancements and the wrong format for crackling or distorted audio. Go to Settings > System > Sound, select the audio device under Output, and set Audio enhancements to Off if the option exists. Also turn Spatial sound off while testing, so you hear the clean base output.
On the same device page, open Advanced and try another Default format. Start with 2 channels, 16-bit, 48000 Hz if it is available. Test the same sound after each change. If crackling disappears after this, the fault was probably a setting, driver or format, not a blown speaker.
4. Run Windows troubleshooting, updates and driver checks
Run the built-in troubleshooter first: Settings > System > Troubleshoot > Other troubleshooters > Audio > Run. On newer Windows 11 installs, the Get Help app may open an automated audio troubleshooter. Restart the PC afterwards, especially if Windows has pending updates.
Install normal updates through Settings > Windows Update > Check for updates. Also check Advanced options > Optional updates for audio or chipset drivers. If the sound became bad right after an update, open Device Manager > Sound, video and game controllers, right-click the audio device, choose Properties > Driver and consider Roll Back Driver if the option is available.
Do not delete drivers randomly. If updating does not help, the audio driver can be reinstalled, but preferably use the correct driver from the PC manufacturer support page for the exact model. Save your work before uninstalling a driver or restarting. If you are unsure about the model, driver or whether the fault is actually hardware, bring the PC to EasyPC for a free diagnosis before doing more.
5. Bluetooth: bad sound can be mode, not speaker
If sound is only bad with a Bluetooth headset or speaker, go to Settings > Bluetooth & devices > Devices. Remove the device with ... > Remove device, turn Bluetooth off and on, and pair again. Then go to Settings > System > Sound and confirm that the right Bluetooth device is selected as output.
Many Bluetooth headsets switch to lower quality when the microphone is used in Teams, Zoom, Discord or game chat. Test by choosing the laptop built-in microphone in the app while keeping the headset as output. If audio becomes clear again, this is Bluetooth profile, driver or headset support, not blown internal speakers. Microsoft also recommends checking that the Bluetooth device supports A2DP for higher-quality audio.
6. Check MacBook correctly
On a Mac, go to Apple menu > System Settings > Sound > Output and choose MacBook Speakers or built-in speakers. Check that sound is not muted, that balance is centered, and that HDMI, USB audio, AirPlay or Bluetooth is not selected by accident. Also test with Bluetooth turned off.
Restart the Mac and install normal macOS updates if the machine is otherwise stable. If internal audio still crackles after restart, update and output checks, Apple Diagnostics can give a clue about hardware faults. On Apple silicon, hold the power button until Options appears, release it, then hold Command-D. On an Intel Mac, hold D during startup. Save any reference codes.
7. Signs of a physically damaged speaker
Physical speaker damage is more likely when sound crackles from built-in speakers but not from headphones, when one side rattles with bass, when audio drops out as the machine moves, or when the issue started after liquid, dust, a fall or very high volume over time.
On some machines, speaker grilles and chassis parts can vibrate even when the speaker itself is healthy. Light pressure around the speaker area while quiet audio plays can reveal loose cover plastic or a vibrating screw. Do not press hard on the display, keyboard or battery area.
8. When speaker replacement is worth it
Speaker replacement is often worth it if the machine is otherwise good, the battery is safe, the part is available and the job does not require unreasonable disassembly. On some MacBook and ultrabook models, the speakers sit close to the battery, main board, trackpad or glued parts. The machine should be assessed before ordering parts.
Bring the PC or MacBook to EasyPC for a free diagnosis if you are unsure whether the fault is the driver, audio hardware, Bluetooth, liquid damage, a loose cable or the speaker itself. Bring the charger and tell us whether the problem affects all audio, one app, one side, Bluetooth, meeting apps or only the built-in speakers. Then we can test safely before you buy parts.