A:Answer Nicholas: Follow pages #7, 8 & 9 from the user manual to sync the rear surround speakers SWA-8500S to the soundbar HW-M4500. Here is the link to the manual: http://downloadcenter2.samsung.com/content/UM/201704/2017040710It m4629526/SWA-8500S-ZC_AH68-02993D-00_170206.pdf.
It might seem like the instructions don't make sense when they state "Turn off the Soundbar using the Soundbar’s remote control or by pressing the (Power) button
on the main Soundbar unit." and then "Press the VOL button on your remote control for 5~6 seconds until the “ID SET” message appears
on your Soundbar display." Even though you've turned off the power, the volume control does work and the ID SET will flash once in the soundbar display and the speakers will pair with the soundbar. Note: This is a unique procedure used only for the rear surround speakers, different from pairing using bluetooth "BT"
Hope this helps! ajb