Location
Your Sunfire Subwoofer is designed to be placed in a corner and this will produce optimum performance. Experiment with at least two corners and then decide which is the best.
#1 is very good positioning.
#2 is also excellent but may shake the back wall too much and cause things on or along the wall to rattle too much. If this occurs, use the #3 position:
#3 Move the woofer approximately three feet away from the right wall and place it along the back wall as shown. This will substantially reduce the rattling of the back wall and will still pressurize the room with lots of bass.
Although low frequencies are non- directional, factors such as room reflections, standing waves, resonance and absorption strongly affect your subwoofer’s performance.
Moving the subwoofer from one corner to another can have a major effect on the bass response.
Remember to keep it at least two or three feet away from any
TV screen, computer, VCR or magnetic tapes and discs. This
will reduce the chance of the magnetic fields upsetting the TV screen or erasing your magnetic media.
Also position the control panel so that it is not touching anything and can receive good ventilation.
Using Two Subwoofers
If you wish to use two woofers, the sound output will double (an increase of 6 dB). Locate the woofers with one in each corner and experiment with the location and phase control to achieve the best bass response.
Always drive each woofer through the Left/Mon input even though you are driving one woofer with a right channel drive and the other with a left channel drive. If your preamplifier has a single sub/LFE output, use a Y cable to split it into two outputs.
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User's Manual