A:Answer I don't think you can add additional speakers to this set up. I purchased this soundbar and accompanying sub for my parents' sitting room right off their kitchen. The sound is crystal clear with a great range.
That being said, I have a Samsung set up (Samsung - 2.1-Channel Soundbar System with 6-1/2" Wireless Subwoofer and Digital Amplifier - Black
Model:HW-N450/ZA SKU:6199820) since I already have a Samsung TV, and it does have the ability to add additional speakers, which I plan on doing when I move this TV to a bigger room. For the time being, the soundbar and sub are plenty of sound for my living room/kitchen area.