2004 Buick Century Owner's Manual - Page 155

Radio with Cassette and CD SCV (Speed-Compensated Volume): With SCV, your audio system adjusts automatically to make up for road and wind noise as you drive. To get to SCV, press the TUNE/AUDIO knob repeatedly until SPEED VOL is displayed. Turn the TUNE/AUDIO knob to select OFF, MIN, MED or MAX. Each higher setting allows for more volume compensation at faster vehicle speeds. Then, as you drive, SCV automatically increases the volume, as necessary, to overcome noise at any speed. The volume level should always sound the same to you as you drive. If you don't want to use SCV, select OFF. DISP (Display): Press this button to switch the display between the radio station frequency and the time. The time can be displayed with the ignition on or off. Playing the Radio PWR (Power): Push this knob to turn the system on and off. VOL (Volume): Turn this knob to increase or to decrease the volume. Finding a Station BAND: Press this button to switch between FM1, FM2, or AM. The display will show your selection. TUNE: Turn this knob to select radio stations. 3-53