Lexus LS460 2011 Owner's Manual page 511


The sound quality level is adjusted individually
The treble, mid and bass levels can be adjusted for the each audio mode sep-
arately.

About Automatic Sound Levelizer (ASL)
ASL automatically adjusts the volume and tone quality according to the
vehicle speed, wind noise or other noise.
LS460_EE
3-3. Using the audio system
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