Hello Kat1,
To optimize your audio experience, please try the various sound modes this model offers. Press the SOUND MODE button on your remote, and then select your desired sound effect: DTS VIRTUAL:X, STANDARD, MUSIC, or ADAPTIVE.
You can adjust TREBLE and BASS via the TONE CONTROL button using the UP/DOWN buttons on the remote between -6 to +6.
Press and hold the SOUND CONTROL button for about 5 seconds to adjust the sound for each frequency band. 150Hz, 300Hz, 600Hz, 1.2kHz, 2.5kHz, 5kHz, and 10kHz are selectable using the Left/Right buttons and each can be adjusted to a setting between -6 to +6 using the Up/Down buttons. (Make sure the Sound mode is set to "Standard".
~Samsung Solutions