Hi Amirakt! You can 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. To control the volume of each speaker, press the CH LEVEL button on the provided remote. Then select CENTER LEVEL, SIDE LEVEL, WIDE LEVEL, FRONT TOP LEVEL, REAR LEVEL, or REAR TOP LEVEL. Once you find the channel you are looking for, adjust the volume between -6 to +6 by using the Up/Down buttons. ~ Samsung Solutions