Hi leonel,<br /><br />Thank you for taking a moment to review the HW-Q6CC Soundbar.<br /><br />To control the volume of the treble or bass press the TONE CONTROL button, and then adjust the volume between -6 to &#43;6 by using the Up/Down buttons on your soundbar remote. <br /><br />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 &#43;6 using the Up/Down buttons. (Make sure the Sound mode is set to “STANDARD”.) <br /><br />Press the CH LEVEL button so you can adjust the volume of each speaker. CENTER LEVEL can be adjusted using the UP/DOWN buttons from -6 to &#43;6.<br /><br />With the optional SWA-9200S Wireless Rear Speaker Kit connected you can adjust the volume by using the provided Soundbar remote. Press CH LEVEL and select REAR LEVEL, then use the Up/Down buttons to adjust the volume within a -6 to &#43;6 range. <br /><br />If you would like louder (or softer) bass from your subwoofer, you can adjust the level by rocking the WOOFER button on the soundbar remote, and then adjusting the level from -6 to &#43;6. To set the subwoofer volume level to 0, press the button in.<br /><br />If you need more help, Samsung is here for you. Please call us at 1-800-SAMSUNG, 8AM - 12AM EST (Ask for Soundbars), 7 days a week. Our Live Chat agents are also available by clicking on the ‘Support’ link on our website. <br /><br />~ Samsung Solutions