One more idea:
If you can generate both pink noise and white noise, sweep both. IMO, pink noise will give you better octave to octave balance while white noise will be more helpful for optimizing the hand-off from subwoofer to main speaker.
If you can generate both pink noise and white noise, sweep both. IMO, pink noise will give you better octave to octave balance while white noise will be more helpful for optimizing the hand-off from subwoofer to main speaker.