How to perform a factory reset
Reset your Acton Multi-Room speaker to factory settings for a fresh start and troubleshooting. The factory reset will delete all settings and you have to set up the speaker again.
To reset the speaker to its factory state:
Push and hold the SINGLE/MULTI MODE button and the SOURCE knob for 7 seconds until both the Single and Multi Mode indicators are lit.
The speaker is reset to its factory state, restored to setup mode and ready to be configured.