I got an eclipse pa5422 4ch. amp and im thinkin about running it in 3ch. mode with the 3rd channel on a sub. Im havin a hard time finding the specs on the amp in 3ch. I need to know what it will put out per ch. so i can start searching for a sub that will work well with it. Even the owners manual doesnt show the 3ch. specs. heres the others so let me know what u think. 85wx4ch@4ohm, 120wx4ch@2ohm, 240wx2ch@2ohm. Those r all rms #'s