Volvo 2008 S40 Owner's Manual page 210

Activating/deactivating Surround sound
1. Press MENU followed by ENTER.
2. Select AUDIO SETTINGS
3. Select Surround FM/AM/CD/AUX
4. Select PRO LOGIC
Equalizer Front/Rear
This function is used to fine-tune the sound level for different frequencies separately.
NOTE
This function is only available on certain sound systems.
To adjust the equalizer settings:
1. Press MENU followed by ENTER.
2. Select AUDIO SETTINGS
3. Select EQUALIZER FRONT/REAR
The column in the display indicates the sound level for the current frequency.
Adjust the level with the TUNING dial (4), or use the Up/Down arrows. Additional
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10 Audio
Audio functions
frequencies can be selected with the Right/Left arrows.
Save the settings by pressing ENTER or exit without saving by pressing EXIT.
Automatic sound control
The audio system's volume is adjusted automatically according to the speed of the vehicle. There are three settings
available, which determine the level of volume compensation:
LOW
MEDIUM*
HIGH
* Default setting.
To set the automatic sound level:
1. Press MENU followed by ENTER.
2. Select AUDIO SETTINGS
3. Select AUTO. VOLUME CONTROL
in the menu and press ENTER.
and press ENTER.
II, 3-channel stereo or
in the menu and press ENTER.
and press ENTER.
in the menu and press ENTER.
in the menu and press ENTER.
OFF and press ENTER.