Toyota HILUX DC, Owner'S Manual

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5-14. Using the audio system
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HILUX_OM_OM0K440E_(GE)
 “DSP” tab
Automatic sound leveliser (ASL)
Select the ASL level among
“High”, “Mid”, “Low” and “Off”.
■ The sound quality level is adjusted individually
The treble, mid and bass levels can be adjusted for each audio mode sepa-
rately.
■ About Automatic Sound Leveliser (ASL)
The system adjusts to the optimum volume and tone quality according to
vehicle speed to compensate for increased vehicle noise.
■ Tone and balance
Tone:
How good an audio program sounds is largely determined by the mix of the
treble, mid and bass levels. In fact, different kinds of music and vocal pro-
grams usually sound better with different mixes of treble, mid and bass.
Balance:
A good balance of the left and right stereo channels and of the front and rear
sound levels is also important.
Keep in mind that when listening to a stereo recording or broadcast, changing
the right/left balance will increase the volume of one group of sounds while
decreasing the volume of another.