Acura 2008 RDX Owner's Manual page 224

Audio System
CURRENT SETTING
218
The current setting is also shown on
the upper display.
The system will automatically return
the display to the selected audio
mode about 5 seconds after you stop
adjusting a mode.
BASS/TREBLE
and treble, select BASS or TREBLE,
and press ENTER on the interface
selector. The current setting is
shown on the audio control display.
Turn the interface dial to the desired
level ( 6 to
selection by pressing ENTER.
CURRENT SETTING
To adjust bass
6), and enter your