Toyota Prius C 2011 Owner's Manual page 251

3-2. Using the audio system
Using the audio control function
■
Changing sound quality modes
Press
STEP 1
Turn
STEP 2
Press
STEP 3
Turn
STEP 4
"BASS", "TREBLE", "FADER", "BALANCE", or "ASL"
Press
STEP 5
■
Adjusting sound quality
Turning
Mode
displayed
"BASS"
"TREBLE"
"FADER"
"BALANCE"
*: The sound quality level is adjusted individually in each audio mode.
250
.
to select "Sound Setting".
.
to select the desired mode.
.
adjusts the level.
Sound
Level
quality mode
Bass* -5 to 5
Treble* -5 to 5
Front/rear
volume R7 to F7
balance
Left/right
volume L7 to R7
balance
Turn to the Turn to the
left right
Low High
Shifts to rear Shifts to front
Shifts to left Shifts to right