2008 Hummer H3 Owner's Manual - Page 186

Setting the Tone (Bass/Treble) e (Bass/Treble): Press and release until BAS/BASS, or TRE/TREB displays. Turn to increase or to decrease. The display shows the bass or the treble level. If a station is weak or has static, decrease the treble. To adjust the bass and the treble to the middle position, press and hold this knob. The radio produces one beep. To adjust all tone and speaker controls to the middle position, press and hold when no tone or speaker control is displayed. CEN or ALL CENTERED displays and a beep sounds. AUTO EQ (Automatic Equalization): Press to select customized equalization settings designed for country/western, jazz, talk, pop, rock, and classical. To return the bass and treble to the manual mode, press and release the e knob until MANUAL displays. For the Radio with Six-Disc CD Player, the equalization one through seven options are included only if your vehicle is equipped with the Bose® system. Press the AUTO EQ button to select equalization settings designed for equalization one through seven. To return the bass and treble to the manual mode, push and release this knob until BASS and TREB displays. 3-52 Adjusting the Speakers (Balance/Fade) e (Balance/Fade): To adjust the balance between the right and the left speakers, press and release until BAL displays. Turn to move the sound toward the right or the left speakers. To adjust the fade between the front and the rear speakers, press and release until FAD or FADE displays. Turn to move the sound toward the front or the rear speakers. To adjust the balance and the fade to the middle position, press this knob, then press it again and hold it until one beep sounds. To adjust all tone and speaker controls to the middle position, press and hold when no tone or speaker control is displayed. CEN or ALL CENTERED displays and a beep sounds.