Sound SettingsPress .Select Settings and press the .Select Device Preferences and press the .Select Sound option, and press the .Sound menu shall be displayed.Additional informationSystem SoundsBalanceBassTrebleSurround SoundEqualizerSpeaker DelayDigital OutputDigital Output DelayAutomatic VolumeDownmix ModeDTS DRCRestoring Factory Defaults for Sound Settings
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Settings and press the 
.... Settings and press the ...