A:AnswerThe guage that is appropriate for the speakers, and the size Samsung wanted to use. I think that was quite possibly the best question I've ever seen
A:AnswerYES. I have my soundbar hw-B650 that is connected to my SWA-9100S and it works great. Took a bit of time to get them to connect though. I had to reset the rear speakers and move it close to the sound bar first though. I think I had to reset it because i had originally connected the A430 sound bar which i returned because it didnt have HDMI. Once they connected i was able to move the receiver back to where i wanted it. Took me a while to figure out how to control the volume on them but totally worth it.
A:AnswerThe wire that connects the rear receiver and speaker is approximately 13 feet. So that means that the speakers can have 26 feet between between them.
A:AnswerI can't say for sure, but I think so. I am using the SWA-9100 with the HW-T650. I believe that the HW-B63 replaced the T650. I will say that I am pleased with the SWA-9100.. Also, you have 15 days to return the speakers to Best Buy, if they don't work.
A:AnswerOn your Samsung Soundbar using your Samsung audio remote put it to surround sound and turn the volume up to 40 and higher and you will hear all the background sounds.
A:AnswerI believe so. I have the SWA-9100S connected to my HW-B650 soundbar. Took a bit and had to reset the receiver but i think was because I previously had it connected to the A430 soundbar. (Which i exchanged for the 650 because i wanted the HDMI option on the bar)