Thanks for your question. The SoundLink Bluetooth Mobile III speaker is our best performing Bluetooth system. It pairs easily with a smartphone, tablet or another Bluetooth device and is great for portability. While it does provide a big performance for a speaker of its size and could sound great in your large room, it may not be the best choice as a designated sound system for that space. If you’re looking for a device to use as a primary music system for your large open concept area, a SoundTouch 20 or 30 WiFi enabled system would be a better option. A SoundTouch system would connect to your home WiFi network and access music from music services such as Internet radio, Pandora, Spotify, Deezer, and iHeartRadio. They allow for easy control via the IR remote or SoundTouch app for computer, smartphone or tablet. Multi-room listening is also possible by adding additional SoundTouch systems. We hope this helps!