Mac OS X: Popping Sound From External Speakers When Waking or Restarting

When a computer using Mac OS X wakes from sleep or restarts, external speakers connected to the computer may make a popping sound.
Symptom

You hear a popping sound from external speakers when the computer wakes from sleep or restarts.


Solution

The popping sound does not indicate any software issue or hardware failure. This is a normal part of hardware-software initialization after waking from sleep or during startup.
Published Date: Feb 17, 2012