Hi Los!
Thank you for purchasing the HW-Q850A Soundbar. Rocking the VOL button forward or backward adjusts the volume. Pressing it in will Mute. Pressing it a second time will Unmute. The bass can be adjusted by rocking the WOOFER button forward or backward.
Please refer to pages 9-10 of the of the Full Manual for details on using the remote control including buttons with more than one function.
https://downloadcenter.samsung.com/content/UM/202104/20210418034944001/AH81-13905A-00_FM_HW-Q800A_ZA_ENG_210409.0.pdf
For further assistance, please contact Samsung Customer Support at:
1-800-SAMSUNG (ask for Soundbars), available 8AM -12AM EST, 7 days a week. Or text HELP to 62913.
For additional support resources, visit us on the Samsung website and click on the ‘Support’ link in the upper right corner of the homepage for:
1) More ‘Contact Us’ options – LiveChat, Facebook, Twitter, Samsung Community, Samsung Members app
2) Manuals & Software
3) Warranty Info
4) Product Registration: For access to easy warranty support, convenient opt-in to special promos and offers, faster troubleshooting and service, and quick notification of system updates.
Thank you,
^Tim