A:Answer Hello there, Yes, the SWA-9500S Wireless Rear Speakers are compatible with the HW-Q850D Soundbar. Regarding the subwoofer Samsung is committed to providing the best possible product experience, quality, and value. We back this Samsung Soundbar with a 1-year limited manufacturer's warranty, including authorized repair for manufacturer defect, if purchased brand-new directly from an authorized seller.
If we can help with anything else, please call us at 1-800-SAMSUNG (Ask for Soundbars), 8 AM – 12 AM EST, 7 days a week. Live Chat with an agent as well as manuals, software, and warranty info can be found at the ‘Support’ link on our Samsung website.
~ Samsung Solutions