The Home Theater System Subwoofer

The subwoofer
Because subwoofers reproduce only non-directional low bass, subwoofers do not contribute to sound localization, and therefore need not be in line of sight to the viewer (in many cases they can even be tucked away under or behind furniture). The accuracy and smothness with which they reproduce low bass, however, does depend on their placement.

First, temporarily put the subwoofer near your listening position. Then, as you play program material with significant low bass content, go stand and listen at likely subwoofer locations in the room. That location which delivers the best bass sound - clean and full, but not "boomy" or "thuddy" - will be the best for final subwoofer placement. Remember that the bass level will be enhanced if placed against wall (+3dB), and even more enhanced if placed in a corner (+6dB).

Placed in corner	Placed against wall