2005 Buick Century Owner's Manual - Page 145

Radio with CD SCV (Speed-Compensated Volume): With SCV, the audio system adjusts automatically to make up for road and wind noise as you drive. To get to SCV, push the TUNE/AUDIO knob repeatedly until SPEED VOL appears on the display. Turn the TUNE/AUDIO knob to select 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. To turn SCV off, press this knob until OFF appears on the display. 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. DISP (Display): Press this button to switch the display between the radio station frequency and the time. Press this button to display the time with the ignition turned off. 3-45