- 128 -● Select the frequency and change the frequency level by using / .● To enhance the bass sound, raise the level of the lower frequency. Toenhance the treble sound, raise the level of the higher frequency.● To reset the levels of each frequency to the default settings, select ResetEqualiser Settings with / and press OK.BalanceAdjusts volume level of right and left speakers.Surround(On / Off)Provides a dynamic enhancer of width to simulate improved spatial effects.Volume settingsAuto Gain Control(On / Off)Automatically regulates large sound level differences between channels andinputs.Volume CorrectionAdjusts the volume of each individual channel or input mode.Speaker Distance to Wall(Up to 30cm / Over 30cm)Compensates for the low frequency sound due to the distance between thespeakers and the wall.● If the back space between the TV and wall is within 30 cm, Up to 30cm isrecommended.● If the back space between the TV and wall is over 30 cm, Over 30cm isrecommended.Voice Guidance SettingsVoice Guidance(On / Off)Set to On to enable voice guidance of the basic features (menu item, on-screen messages, etc.) for visually impaired users.Speed