Yamaha ATS-4080 Owner's Manual page 29

▪ To mute the sound, press |. Press | again to unmute.
Flash (on mute)
▪ When sound input to the HDMI IN jack is output from the TV, the volume level does
not change even if you press VOLUME (+/-) or |.
▪ To adjust the subwoofer volume, press SUBWOOFER (+/-). The subwoofer
volume can be adjusted separately from the whole volume.
Volume down (-)
▪ When playing audio/video from a device connected to the TV, select TV as the
unit's input source, and select the playback device with the input selector on the
TV.
Volume up (+)
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