| Re: Wierd Null
Looks a bit large (wide) for a true null. Could be caused by any number of things, such as interaction with nearby boundaries, your listening position, etc.
Just thinking out loud here, but 120 Hz – that’s kind of a high crossover point. Maybe the Maggies aren’t extending down to the crossover point? Don’t those speakers radiate from the rear as well as the front? If so, that means you have all kinds of phase (i.e. delayed signal-related) things happening, which probably explains why the phase control on the sub didn’t do anything (assuming its variable). It may be helpful to take some more measurements, such as mains only, and only of the mains with the sub.
P.S. I'm with Jerome - why are your SPL levels so high?
Regards,
Wayne
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