Subwoofer S 6000: How do I recognize the standby status?

If the S 6000 SW subwoofer is used with the automatic function (automatic on/off), the respective status can be recognized by the red front LED.

If the subwoofer is in operation, the red LED lights up brightly - 100%.

In standby, the LED also lights up, but with reduced brightness - about 30%.

The brightness of the LED does not change abruptly but slowly increases or slowly gets darker - depending on the change.