Hey Gonk....long time...
The source material is definitely low enough. It's a subwoofer calibration disc with tones from 16hz to 120hz. It's the oddest thing, I can't get anything from the subs until I make it 5 or 7 channel stereo, and then I had to disconnect all of the other speakers to do the calibration. I read on the forums that as long as they crossover is high enough (mine at 80hz) and the outlaw is set to Stereo and the speakers are small, it should work. I get nothing. I don't understand why. I believe that the other speakers are crossed over differently...but not sure where...it would be at least 80hz or higher.