Adjusting the Balance
Adjust the sound volume of the left and right speakers.
Setting item: BALANCE
Setting range: L15 to R15
Adjusting the Fader
Adjust the volume of the front and rear speakers.
Setting item: FADER
Setting range: F15 to R15
Setting the Treble Control
You can change the Treble Frequency emphasis to create your own tonal preference.
1 Select TREBLE on the AUDIO MODE screen, then press the joystick right.
2 Press the joystick up or down to select the desired item, then press the joystick left or right to adjust and set the desired item.
Setting the treble level
You can boost or cut treble frequencies.
(The level of each audio source can be adjusted.)
Setting item: LEVEL
Setting level:
Setting the treble center frequency
The displayed treble frequency is boosted. (Common to each audio source.)
Setting item: FREQUENCY
Setting range: 7.5kHz 
10kHz 
12.5kHz 
15kHz
•Adjustment cannot be performed when an external audio processor is connected and DEFEAT is set to ON.
Setting the Bass Control
You can change the Bass Frequency emphasis to create your own tonal preference.
1 Select BASS on the AUDIO MODE screen, then press the joystick right.
2 Press the joystick up or down to select the desired item, then press the joystick left or right to adjust and set the desired item.
Setting the bass level
You can boost or cut bass frequencies. (The audio source level can be adjusted.)
Setting item: LEVEL
Setting level:
Setting the slope
Select the frequency you want to set within the available range. (Common to each audio source.)
Setting item: SLOPE
Setting range: 0.50 
0.75 
1.00 
1.25
Setting the bass center frequency
The displayed bass frequency is boosted. (Common to each audio source.)
Setting item: FREQUENCY
Setting range: 60Hz 
80Hz 
100Hz 
120Hz
•Adjustment cannot be performed when an external audio processor is connected and DEFEAT is set to ON.
Adjusting the Subwoofer Level
Adjust the subwoofer output.
Setting item: SUBW LEVEL
Setting range: 0 to 15
•The level adjustment becomes available when ON is set in “Subwoofer On and Off” (page 16).
Tuning Loudness ON or OFF
Loudness introduces a special low- and
Setting item: LOUDNESS
Setting range: ON / OFF
•Adjustment cannot be performed when an external audio processor is connected and DEFEAT is set to ON.
Tuning Defeat ON or OFF
By setting Defeat ON, previously adjusted settings of BASS and TREBLE will return to the factory defaults.
Setting item: DEFEAT
Setting range: ON / OFF
Adjusting Volume of GUIDE Voice
The volume level of the speaker input voice and the navigation interrupt voice output from the external audio processor is adjusted.
Setting item: GUIDE MIX LV
*Setting range: 0 to 15
*Make sure to adjust this setting to 15. Otherwise operation may not be correctly performed.
•Adjust the speaker input voice interruption level in “Adjusting the Speaker Input Voice Interruption Level” (page 14) and “Navigation Audio Interruption Volume Adjustment” (page 15).