Kenwood DNX7230BT Instruction Manual page 100

Highway sound setting
You can boost a certain range of sound that
becomes hard to hear due to road noise.
1
Touch [Highway Sound] in the Sound
Effect screen.
Highway Sound screen appears.
2
Select the boost level from among
[High], [Low], and [OFF].
Elevation
You can raise the sound position heard from
the speakers virtually.
1
Touch [Elevation] in the Sound Effect
screen.
Elevation screen appears.
2
Select Elevation level from [High],
[Low], and [OFF].
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Controlling Audio
99