2007 Lexus GS450h audio

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3-3. Using the audio system
3
Interior features
■Sound
●Dolby Digital
Manufactured under license from Dolby Laboratories. 
“Dolby”, “Pro Logic”, and the double-D symbol are trademarks of Dolby Labo-
ratories. Confidential unpublished works. 
©1992-1997 Dolby Laboratories. All rights reserved. 
This product incorporates copyright protec tion technology that is protected by
method claims of certain U. S. patents and other intellectual property rights
owned by Macrovision Corporation and ot her rights owners. Use of this copy-
right protection technology must be authorized by Macrovision Corporation,
and is intended for home and other limited viewing uses only unless otherwise
authorized by Macrovision Corporation. 
Reverse engineering or disassembly is prohibited.
●DTS 
“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater
System, Inc.
■Unsuitable discs, and player precautions
 P. 2 2 2
CAUTION
■DVD video precaution
Conversational speech on some DVDs is recorded at a low volume to emphasize
the impact of sound effects. If you adjust the volume assuming that the conversa-
tions represent the maximum volume level that the DVD will play, you may be star-
tled by louder sound effects or when you change to a different audio source.
Loud sounds may have a significant impact on the human body or pose a driving
hazard. Keep this in mind when you adjust the volume.

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3-3. Using the audio system
Optimal use of the audio/video system
Press on the panel to display the audio/video control screen.
Operating the radio, cassette player and CD player
Operating the DVD video/audio and video CD
Adjust sound 
quality and balance
Adjust the DSP
Adjust screen ratio
Adjust sound

quality and balance
Adjust the DSP

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3-3. Using the audio system
3
Interior features
Adjusting sound quality and balance
To u c h on the screen.
Adjust the settings, referring to the
follo
wing table.
Once you have finished, touch .
*: The sound quality level is adjusted indi vidually in each radio, cassette tape,
CD or DVD mode.
STEP1
STEP2
Sound quality
modeDisplayLevelTo u c h
High-pitched
tones*-5 to 5
or Mid-pitched tones*-5 to 5
Low-pitched
tones*-5 to 5
Front/rear
volume balanceF7 to R7 or
Left/right volume balanceL7 to R7 or

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3-3. Using the audio system
Setting DSP
The following features can be set as desired by touching on the
screen.
■ Turning Automatic Sound Levelizer (ASL) ON or OFF
To u c h or .
ASL automatically adjusts the volume and tone quality according to the
noise level as you drive your vehicle.
■Changing the listening position (vehicles with CD player only)
The speaker balance can be change d to pr
oduce the best sound for
each listening position.
To u c h .
The listening position changes as follo
ws each time the switch is
touched.
With CD playerWith DVD player
DisplayListening position
Position best suited to the driver's seat
Position best suited to th e driver's and front passen-
ger’s seat

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3-3. Using the audio system
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Interior features
■Turning the surround ON or OFF (with DVD player only)
To u c h or .
Setting the screen ratio mode (with DVD player only)
To u c h on the screen.
Touch one of the ,
or to
match screen ratio printed on the
DV
D.
DisplayListening position
Position best suited to the rear seats
Position best suited to all seats
STEP1
STEP2
Screen ratio modeDetails
NORMALSuitable for 4:3 screen ratio
WIDE1Expand the Normal screen 
horizontally to fill the display.
WIDE2Suitable for 16:9 screen ratio

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3-3. Using the audio system
Using the steering switches
Turning on the power
Press when the audio system is turned OFF.
The audio system can be turned OFF by holding the switch down for 1 second
or more.
Changing the audio source
Press when the audio system is tu rned ON. The audio sour ce
changes as follows each time the button is pr
essed. If a cassette tape or
CD is not inserted, that mode will be skipped.
Vehicles with CD player:
FM (1, 2) cassette player CD player AM SAT (1, 2, 3)
Vehicles with DVD player:
FM (1, 2) cas
sette playerDVD playerAM SAT (1, 2, 3)
Some audio features can be controlled using the switches on the steering
wheel.
Power on, select audio
source
Vo l u m e
Radio: Select radio stations
Cassette: Fast forward, r
ewind and select -
ing tracks
CD: Select tracks, discs and folder
DVD: Select tracks, discs and chapter

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3-3. Using the audio system
3
Interior features
Adjusting the volume
Press “+” on to increase the volume and “-” to decr ease the vol-
ume.
Hold down the button to continue increasing or decreasing the volume.
Selecting a radio station
Press to select the radio mode.
Press or  on to select a radio station.
To scan for receivable stations, pres s and hold the switch until you hear
a beep.
Fast forwarding or rewinding the cassette
Press to select the cassette mode.
Press and hold  or  on until you hear a beep.
To stop fast forwarding or rewinding, press the same switch.
Selecting a track or chapter (DVD mode only for chapter selection)
Press to select the cassette mode, CD or DVD mode.
Press  or  on to select the desired track or chapter.
Cassette mode only: you can skips maximum 9 tracks.
Selecting a disc or folder in the CD or DVD player (Folder selection is
available only when MP3/WMA disc is in use.)
Press to select the CD or DVD player.
Press and hold  or  on until you hear a beep.
STEP1
STEP2
STEP1
STEP2
STEP1
STEP2
STEP1
STEP2

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3-3. Using the audio system
■Canceling automatic selection of a radio station
Push the same switch.
CAUTION
■To reduce the risk of an accident
Exercise care when operating the audio switches on the steering wheel.