Star Trac StairMaster Owner's Manual page 13

5.4 AVC
Audio
February, 2016(Version 2)
Equalizer
MTS STEREO
Audio Language Enlish
SurroundSound
AVC On
Enter MENU
1. Use VOLUME  keys to select Audio.
2. Use CHANNEL  keys to select AVC.
3. Push CC key to enter/change setting(ON or OFF).
AVC(Auto Volume Control) function is the ability to
automatically adjust volume level.
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