PLAYBACK ➤ Operations En 15BASS EXTENSION keyEnable/disable the bass extension function. Whenthis function is enabled, you can enjoy a powerfulbass sound with the Yamaha original bass boosttechnology “Advanced Bass ExtensionProcessing.”CLEAR VOICE keyEnable/disable the clear voice function.When this function is enabled, human voices suchas lines in movies and TV shows, or news andsport commentary, are played clearly.AUDIO DELAY keyAdjust the audio delay to synchronize the soundwith the video when the video image on the TVmay seem delayed with respect to the sound.Follow the procedure below to adjust the audio delay.NOTE• The audio delay cannot be adjusted in the followingsituations.− When Bluetooth or NET is selected as the input source.− When sound is distributed from the unit to one or moreother MusicCast-enabled devices.1 Hold down the AUDIO DELAY key for morethan 3 seconds.The indicator at far left flashes.2 Press the SUBWOOFER (+/-) key to adjust theaudio delay.Pressing the SUBWOOFER (+) key delays theaudio output timing.3 To finish the adjustment, press the AUDIODELAY key.HINT• The adjustment will be finished automatically if nooperations are performed for 20 seconds.Enabled: Flashes three times and goes outDisabled: Flashes once and goes outEnabled: Flashes three times and goes outDisabled: Flashes once and goes out(–) (+)6