Automatic Volume Control

With automatic volume, the audio system adjusts automatically to make up for road and wind noise by increasing the volume as vehicle speed increases. On first design Bose amplifiers (class 2) the system uses a noise compensation microphone to monitor cabin noise and increase volume as needed, press the AUTO VOL button until AVOL ON appears on the display, to turn off press AUTO VOL button until AVOL OFF is displayed. On second design Bose amplifiers (non-class 2) and base radios the radio uses a vehicle speed signal, received via class 2 message to adjust volume based on speed, press the AUTO VOL button to select LOW, MEDIUM or HIGH. To turn AUTO VOL off, press until AVOL OFF is displayed.