The power switch is used for installing and uninstalling the subwoofer, and for power conservation during long vaca- tions. Leave it switched on at all times for normal operation.
After a period of inactivity (i.e. with no input signal), the subwoofer will auto- matically turn itself to Standby mode, where it is effectively muted. It can turn back on automatically when an input signal is applied, or if a 12 VDC trigger voltage is applied to the Trigger inputs, or if the Start button is pressed.