Hello rearspeakers! To turn off the rear speakers on the Samsung HW-Q930F soundbar, use the remote control to access the soundbar’s settings. Go to the speaker settings and reduce the volume of the rear left (REAR L), rear right (REAR R), or both (REAR L+R) to the lowest level. 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.
~ Samsung Solutions