Cadillac 2008 XLR Owner's Manual page 269

Adjusting the Speakers
DSP (Digital Signal Processing): The DSP feature is
used to provide a choice of four different listening
experiences. DSP can be used while listening to the
audio system or the CD player. The audio system can
store separate DSP settings for each source and
preset station, except WX, which is always set to TALK.
To save DSP settings for your preset stations, use the
SOUND menu or touch DSP from the preset station
menu to access the DSP menu. See "Sound Menu"
listed previously in this section for more information.
Touch DSP to change the following options:
ON/OFF: Touch ON/OFF to turn DSP on and off.
DRIVER SEAT: Touch this button to adjust the audio to
give the driver the best possible sound quality.
TALK: TALK makes spoken words sound very clear.
Touch this button when listening to non-musical material
such as news, talk shows, and sports broadcasts.
SPACIOUS: Touch this button to make the listening
space seem larger.
SOUND: Touch SOUND to access the Sound menu.
See "Sound Menu" listed previously in this section
for more information.
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