Convenient picture and sound control functionsContinuedHow to use surround1 Press the SOUND menu button , till the SOUND menushown on the right display on the screen.2 Press the CH+/- buttonsselect "SURROUND" , thenpress the VOL-/+ buttons toturn the SURROUND "ON".MUTESound mute1 Press the MUTE button on theremote control and "MUTE" typeface will display on the lower partof the screen. At this time, thesound of the TV set is turned off.2 If you want to recover the sound,press the MUTE button again ordirectly press the VOL-/+ buttons.SOUNDMUTESurround and mute functionsSOUNDVOLUME 45BASS 48TREBLE 48BALANCE 0SURROUND ON3 Press the CH+/- buttonsselect WOOFER VOL, thenpress the VOL-/+ buttons toobtain the desired effect.