Samsung UE40ES7000U E-Manual page 146

a slider, and then change the slider's
value. To Reset the Equaliser, select
Reset. A pop-up appears asking if you
want to reset. Select Yes. To exit, select
Close.
Balance L / R: Adjusts the balance
between the left and right speaker.
100Hz / 300Hz / 1kHz / 3kHz / 10kHz
(Bandwidth Adjustment): Adjusts the
volume level of specific bandwidth
frequencies.