Vision VN720 KI-SPORTAGE Owner's Manual page 24

BASIC FUNCTIONS
With „Default" you can restore the respective factory settings.
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Scroll the right field down to see all settings under „MISC".
Under the section „Loudness" you can set the bass/treble
boost from 0 - 20dB regardless of the equalizer settings.
Note: This can lead to high distortion for the speakers.
Under „Subwoofer" you can turn on or off the sound output of
the RCA output SUBWOOFER and you are able to set its level
from -12dB to + 10db.
Unter „Center/5.1CH" you can turn the sound output of the
RCA output CENTER on or off and you are able to set its level
from -12dB to + 10db.
In addition, you can switch the device from 5.1 to 4 CH sur-
round sound.