This sound bar has pretty good loud sound it fluctuates when you have Dolby Atmos it's like a beast I have a 15x15 room with 9 ft ceilings. One thing I would suggest I see nobody talking about is go to dolby's website on speaker setup because the manual says different the subwoofer should be mounted towards closer to the TV and the surround speakers should be mounted no higher than halfway up your wall. Also if you purchase this system I would recommend turning virtual x off and settings on the remote it will distort the center channel it took me a whole month to figure that out I wasn't hearing voices very good. One thing I do like if you like to play music or maybe people in the back or not hearing it that well is to put it in dual mode on the remote it will mimic the front stereo speakers to the back will give you more volume in the back surround speakers Vizio did not have this on prior sound bars which I had that makes it better for stereo listening. Now if you need more length on your wires to run in the back you can buy RCA plugs that will work to extend it but you need to get where the casing around the RCA plug very thin so it will fit into the back of the speakers I have RCAs that I purchased from Amazon They also sell three-way splitter that will work I've also seriesed in some old surround speakers from a Vizio that I no longer use and works great as a midway speaker.