if no bluetooth® device is actively connected, the speaker will automatically turn off after 30 minutes of inactivity. to turn off this feature, follow these steps:
Turning the auto-off feature off/on
Applies to:
press and hold aux and volume + at the same time. you will hear a voice prompt/tone confirming that the auto-off setting is off
Aux

Volume +

Repeat to turn the Auto-off setting back on