Lexus GS 450h 2008 Owner's Manual page 302

3-3. Using the audio system
■
Changing the listening position (with CD player)
The speaker balance can be changed to produce the best sound for
each listening position.
Touch
The listening position changes as follows each time the switch is
touched.
Display
■ Turning the surround ON or OFF (with DVD player)
Touch
300
.
Position best suited to the driver' s seat
Position best suited to the driver' s and front passen-
ger' s seat
Position best suited to the rear seats
Position best suited to all seats
or .
Listening position