Lyngdorf Audio MP-50 Owner's Manual page 36

Notice that playback of Auro-3D material will not make use of Dolby-enabled
speakers.
Verify speakers
Press the Verify Speakers button to verify your setup.
Adjust Sub
With the RoomPerfect™ microphone at the listening position, push "Start." Adjust the volume
according to the instruction and push "Next."
This will assist you in having the optimal level setting for the subs in order to
have the correct RoomPerfect™ calibration.
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