In audio systems of any subwoofer is always one of the features of human sound perception Bashny.Net

Regardless of the number of satellite speakers in home theater systems and other audio systems, the subwoofer is always the same. This is due to the fact that the human ear is not able to identify the source of low sounds. Where are the sounds of high and medium frequencies, we can always understand, but the spread of a low sound seems evenly. Therefore, the number of satellites in the audio system is important, and a subwoofer - no, it is only meaningful capacity and location.

via factroom.ru