Speaker Placement
Now, while such reinforcement might actually be beneficial at very low
frequencies, excessive excitation can cause “overhang” or a droning effect at
mid-bass frequencies. A way to minimize excitation of these
resonances is to place your subwoofer asymmetrically relative to room
boundaries. For instance, if the subwoofer is 2 ft from one corner wall, then
place it 1.5 ft to 3 ft from the other.
Placing the subwoofer in a corner will reduce the radiation angle and thus
increase efficiency. It will also excite the maximum number of room modes and
decrease distortion.
A best case scenario is to actually use two subwoofers, one to each side of the
listener. The subs should be placed 90° out of phase with each other. This
improves spaciousness and bass uniformity, with a reduction in room level
peaks.
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General