Dual Subwoofers & Placement

[Gov]

I am thinking of adding an Energy S10.3 to my 5.1 set up. I currently have and plan to keep a Mirage Omni-S12. These two subs are not the same, but like first cousins. I would place the Energy in the corner of the opposite side of the room that the Mirage is on. The Mirage is on the front wall between my center and right main. So the Energy would be by the right surround and nearfield.
Would the addition of the Energy be beneficial to my set up? Would I have any potiential phase problems with this placement. I have the Mirage at "0" on the phase switch. Would the Energy have to be at "180"? Or would I have wait and see once its in place.

Thanks

[ironmike86]

You set one calibrated sub to phase 0 . Calibrate the other sub with the other one off with you spl meter. Turn them both on. Turn the phase on one of the subs and see if it goes louder or lower. if it's out of phase it won't play loud i believe. Not hard like ppl make it out to be.:):eek::rolleyes::)