Using automatic sound levelizer
During driving, noise in the car changes according to the driving speed and road conditions. The automatic sound levelizer (ASL) monitors such varying noise and automatically increases the volume level, if this noise becomes greater. The sensitivity (variation of volume level to noise level) of ASL can be set to one of five levels. 1 Press AUDIO to select ASL. Press AUDIO until ASL appears in the display. 2 Press a to turn ASL on. ASL Mid appears in the display.
# To turn ASL off, press b.
3 Press c or d to select the desired ASL level. Each press of c or d selects ASL level in the following order: Low (low)Mid-Lo (mid-low)Mid (mid) Mid-Hi (mid-high)High (high)