Samsung pl51d550c1m E-Manual page 39

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Equalizer
Adjusts the sound mode (standard sound mode only).
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Balance
● 100Hz
the level of specific bandwidth frequencies.
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Reset: Resets the equalizer to its default settings.
◀
L/R: Adjusts the balance between the right and left speaker.
/ 300Hz / 1kHz / 3kHz / 10kHz (Bandwidth Adjustment): Adjusts
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