2009 Buick Lucerne Owner's Manual - Page 226

Setting the Tone (Bass/Midrange/Treble) BASS/MID/TREB (Bass, Midrange, or Treble): The radio may display some or all tones, such as BASS, MID, and TREB. To adjust the tone settings, press the f knob until the tone control tabs display. Press the pushbutton positioned under the desired tab, then turn the f knob clockwise or counterclockwise to adjust the highlighted setting. The highlighted setting can also be adjusted by pressing either SEEK arrow, \ FWD, or s REV button until the desired levels are obtained. If a station's frequency is weak, or has static, decrease the treble. The radio may be capable of adjusting bass, midrange, or treble to the middle position by pressing the pushbutton positioned under the BASS, MID (midrange), or TREB (treble) tab for more than two seconds. The radio beeps once and the level adjusts to the middle position. The radio may also be capable of adjusting all tone and speaker controls to the middle position by pressing the f knob for more than two seconds until the radio beeps once. EQ (Equalization): Press to select preset equalization settings. To return to the manual mode, press until Manual displays or start to manually adjust the bass and depending on the radio, midrange, or treble by pressing the f knob. Adjusting the Speakers (Balance/Fade) ` BAL/FADE (Balance/Fade): To adjust balance or fade, press the ` if the radio has this symbol, or the f knob until the speaker control tabs display. Continue pressing to highlight the desired tab, or press the pushbutton positioned under the desired tab. Turn the f knob clockwise or counterclockwise to adjust the setting. The setting can also be adjusted by pressing either SEEK arrow, \ FWD, or s REV until the desired levels are obtained. The radio may be capable of adjusting balance or fade to the middle position by pressing the pushbutton positioned under the BAL or FADE tab for more than two seconds. The radio beeps once and the level adjusts to the middle position. The radio may also be capable of adjusting all speaker and tone controls to the middle position by pressing the f knob for more than two seconds until the radio beeps once. 3-86