Factory reset
Short answer
Push and hold the media control for more than 10 seconds to return the speaker to its original settings and remove all user settings.


Reset the Marshall Woburn III speaker to factory settings with the steps below for a fresh start and troubleshooting:
Push and hold the media control for more than 10 seconds and the speaker will reset.
Remove WOBURN III from your audio device’s Bluetooth list before pairing again.
Notes:
A factory reset will return the speaker to its original settings, excluding any firmware updates.
This will delete all user settings and the speaker needs to be set up again.