Maurice; It doesn't matter. You see, bass frequencies (below 100 hz), are non-directional. You can place it anywhere in your room that you see fit. I'm not sure about shielding in Subwoofers, but I would say that if you are placing it 3 feet away from your TV, you will have no problem.
Maurice; It doesn't matter. You see, bass frequencies (below 100 hz), are non-directional. You can place it anywhere in your room that you see fit.
It does matter. The placement of the subwoofer will excite various room modes, resulting in large peaks and dips in the frequency response. The goal is to place the sub where these peaks and dips are minimized. If you have a parametric EQ, corner placement may be ideal. It will typically result in three large peaks (which can easily be tamed via the EQ) but has the advantage of more perceived output at the listening position. Arbitrary placement of the subwoofer could cause a dip at the listening position (not a good result).
As far as the magnetic field issue, put it in each position and judge for yourself (the picture will have obvious problems).
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