Those slim flat panel TVs look great, but sound, not so much because there\u2019s not room for big speakers or big amplification. That\u2019s what makes a sound bar a good investment -- sound is just as important as a great picture. LG\u2019s\u00a0NB3730A 300W 2.1 Smart Sound Bar with Wireless Subwoofer knows how to \u201csound off,\u201d but it doesn\u2019t stop there. Read on for\u00a0our soundbar review.\r\nThe\u00a0NB3730A has a slim profile that's about 47-inches long, but it's not high -- that\u2019s important if placed in front of a TV with a low-slung stand (the case with many 50\u201d and smaller models). All connections are on the back and take about 3 minutes to put together: connect the power cord and run it into the AC; connect a digital optical cable (included) between it and the audio out of the TV; place the wireless subwoofer nearby and plug it into an AC outlet (there\u2019s no switch as it turns on\/off in sync with the sound bar). Of course you do need to change the settings of the TV to channel the sound (in this case a Sony Bravia 50\u201d LCD) to send the audio out, but that\u2019s it.\r\n\r\nThere\u2019s a paring button on the back of the sub, but it looks like it was set through default because when I first turned the sound bar on, when I plugged the sub into the wall outlet, it too went on (the LED light on the front going from red to green). But should there be a power glitch needing to mate the two again, it\u2019s not going to be a problem because of the pairing button.\r\n\r\nThe sound bar is all glossy black which helps to hide the magnetically shielded recessed speakers -- there\u2019s no grill covering the woofers and tweeter at each side. Control can be done through touch sensitive icons at the center or, more sensibly, through the remote.\r\n\r\nNow a sound bar doesn\u2018t have to try very hard to have more volume than the speakers in one of today\u2019s flat panel TVs -- even a slim sound bar like the LG has more room for placing multiple speakers connected to larger amplification. But once you get past that, the real value comes from the nuances of sound. Take this example: the Bravia\u2019s 10 watt stereo speakers reproduced the general surface noises in the SKYFALL scene which has Bond chasing after a bad guy, both on motorcycles. But the LG brought out the \u201cgritty\u201d rumble of the treads of the tires as they screeched from being abused on the road.\u00a0 This deeper sound came partly from the addition of the subwoofer, but just as much from the LG\u2019s speaker set. It wasn\u2019t a simple volume thing.\r\n\r\nBut speaking of volume, the real test comes from how loud you can play without losing clarity and introducing \u201cnoise.\u201d Continuing to use SKYFALL, I raised the volume to around 80% of maximum and, while jarring to stand close to, dialogue continued to be cleanly heard even when in the midst of the music swelling during action scenes.\r\n\r\nI also played through most of Disney\u2019s Wreak-It-Ralph, just to enjoy the retro gaming sound effects that pepper the movie. I remember what those sounds should be like from my days at the arcades and happily the NB3520A reproduces all the bleeps and blaps, the staccato highs and synthesizer lows accurately (and entertainingly). But I did find that raising the bass too high could muffle some dialogue if the sub was fairly close to the sound bar so I dialed back on it, as compared to when playing Bond.\r\n\r\nLG figured that adding some glitz to this sound bar could raise it above the others -- which is fine providing that the \u201cglitz\u201d provided a real value. In this case, \u201cSmart TV\u201d functions are built in and displayed on the TV through a HDMI cable.\u00a0 These consists of Netflix and other premium sites, plus LG apps to access and use for video, gaming and other functionality. All of this works in a competent fashion, although not at lightning speed so some patience must be cultivated. There is both wired and wireless Internet for connecting and the setup for Internet access can be quickly done.\r\n\r\nTo see how music sounds, I decided to use the NB3730A\u2019s Bluetooth feature. A press of the remote cycled to BT pairing and my Mac\u2019s iTunes library was ready to go. Playing a variety of high-resolution music files showed that the LG\u2019s can handle symphonic pieces with better than reasonable results -- the string section coming through clearly in Mahler\u2019s 3rd even when played slightly above 50% of the volume level. Switching to pop, I drove the volume of some old Boston tunes nearly all the way up and enjoyed the bone-shaking bass from the sub. The speakers did start to \u201cgive\u201d a bit at the higher frequencies (most likely a result from being encased in plastic and not wood\/wood composite), so I dialed it back a little. But few will find this a problem because if they\u2019re playing anything that loud they\u2019re not looking for nuances, just a sheer noise \u201cwall.\u201d\r\n\r\nI also played the most recent B52\u2019s \u201cKeep This Party Going\u201d which is super heavy on the percussion. The\u00a0NB3730A reproduced the electronic drums properly (no dull thuds) and didn\u2019t get in the way of the lead singers very, very low voice. The sound bar\u2019s size also makes for better stereo separation, as exhibited by playing The Cars\u2019 \u201cDangerous Type.\u201d Standing about 10 feet back and facing the NB3520A, I could clearly hear the separation of the electric guitar riffs at my left and the synth at my right.\r\n\r\nThe\u00a0NB3730A has a 3D Surround mode which strives to create a pseudo surround effect. It mildly enhanced the audio of SKYFALL, but can\u2019t duplicate the effect of actual surround speakers. This is true of pretty much all of these psycho-acoustic surround modes (with a few exceptions) but some will find it to their liking. Me, I prefer leaving the sound at its \u201cNatural\u201d level. But I can certainly see the NB3520A taking the place of the center speaker in a 5.1 audio setup or even that of the Left and Right front speakers if stereo separation is not a vexing concern.