The Teufel Streaming/Raumfeld subwoofer offers the following settings on its rear panel:
Slide switch "Phase": here the signal output of the subwoofer is optimized. Try changing the phase setting if the subwoofer booms or sounds unusual due to spatial conditions.
Rotary control "Sub Level": (only for wired operation) Here you can adjust the sensitivity (volume) of the incoming signal. For wireless operation, use the device settings menu via the Raumfeld app for this function.
"High Pass" rotary control: this setting filters all frequencies that are below the set frequency.
For example: if the control is set to 50Hz, no frequencies lower than 50Hz will be reproduced. To ensure that the bass is reproduced as unfiltered as possible, a setting of 20Hz is recommended.