Soundbars with wireless subwoofers can certainly sound impressive, because that big 15-pound block you keep next to your couch can make the room shake without much effort. Because of this, when shopping for a system, its easy to ignore the soundbar speaker itself, which gives you all of the audio above approximately 100Hz. Dialog, music, sound effects, and anything that isnt completely bass-driven suffers if the soundbar doesnt do its job. Unfortunately, the Vizio SB402M-A1 is proof of that. Its subwoofer is capable and its $229.99 (direct) price tag is right, but the soundbar just doesnt have enough depth or power to give the midrange and treble response enough impact.DesignThe soundbar itself is 40.1 inches wide and 4.1 inches high on its removable silver-colored feet, and measures only 2.1 inches deep. It weighs a svelte 4.8 pounds, and can easily be placed in front of your TV or mounted on a wall. The front is covered with a cloth grille interrupted in the middle by a glossy plastic rectangle with a silver Vizio logo and a blue LCD display. The ends are capped with silver-colored trim that give the soundbar a slightly more distinguished look. The top of the soundbar holds Power, Input, and Volume Up/Down buttons flush against a glossy plastic shell. The back holds the power port facing outward and a USB port, analog input, coaxial input, and optical input set facing right or down inside recessed areas, which are designed to make the ports accessible when the soundbar is mounted on a wall.The wireless subwoofer is nondescript and black, measuring 12.8 by 8.5 by 11.3 inches (HWD) and weighing 10.9 pounds. The front, top, and back are black plastic, while the sides are covered in cloth grilles. A side-firing port sits on the back. It comes pre-paired with the soundbar, so all you have to do is plug it in, make sure its within about 30 feet of the soundbar, and enjoy the bass.The remote is large, chunky, and simple, measuring 4.4 inches long and 0.6 inches thick. It holds Power, Input, Mute, and Menu buttons, plus a direction pad that doubles as playback and volume control. The remote isnt backlit, but its easy enough to use blindly. PerformanceSpeakers need room in the cabinet to resonate, and while the big, chunky subwoofer has plenty of space for bass, the soundbar is too thin to produce satisfying midrange. Rage Against The Machines Guerilla Radio sounded notably tinny, with the richer drumbeats and guitar lines sounding hollow and jangly. The subwoofer produced decent deep bass, but when the bass crept over the crossover and requires the soundbars drivers, it lost a lot of its weight.The tinny trebles and mediocre midrange was apparent in Tron: Legacy , where the sweeping, alien soundtrack of Daft Punk had plenty of force thanks to the subwoofer. But dialog sounded comparatively fuzzy, and crashing and shattering sound effects lacked much texture. Anything that wasnt deep bass had a distinct lack of warmth, and the soundbar sounded decidedly inferior on all fronts compared to the Sony HT-CT260 soundbar.