The sound output from the SoundBar is quite nice. I live is a spacious apartment with a large living room and I have no problem with the sound levels. This thing can get quite loud. Also the subwoofer kicks quite well. I used the Transformers and also the Planet Earth BluRay movies to test out this SoundBar. Bass is very good, Voices are clear. Simulated surround is not as good as a $1k Yamaha but it is quite nice for the price range. I would recommend mounting this to the wall for better mid range. Another also reviewer stated this and he was right. LG NB3520A
The Bluetooth is great. I synced up my Galaxy Nexus and used the new Florence and the Machine MTV Unplugged album to test sound quality. All I can say is wow. The clarity and experience blew me away for a SoundBar and ease of use when paring the BlueTooth was nice. This SoundBar also has a USB port on it to hook up a portable HDD or USB drive and play music straight from there(Bonus!).
I this sound bar for free with my LG TV, 47LM7600. I have never had a sound system before and I am loving how good the sound is. I will never have a TV without one of these, and for me it was free so I am very happy.