Lexus ES-300 2001 Manual page 260

AUDIO
In the "TAPE" or "CD" mode, the applicable
functions are shown in the lowest part of the display.
Push the switch just below to turn on each function.
(b) Tone and balance
How good an audio program sounds to you is largely
determined by the mix of the treble, mid–range, and
bass levels. In fact, different kinds of music and vocal
programs usually sound better with different mixes of
treble, mid–range, and bass.
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 if you are 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.
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