Wow Jason! What are your room dimensions if I may ask?
Wow is right Marty, never mind the dimensions, it's near perfectly reflective of a non-coincident monopolar box radiator!
Consider, his M2 have near perfect native (anechoic) "direct" response (top Black line), lateral off axis and then a bit of a dip vertical due to non-coincidence (blues and reds):
When placed in a more typical room like yours and mine, with varying degrees of reflectivity and lossiness of surfaces, openings, etc regardless of dimensions, measured with a pressure only sensor (no velocities) like an omni mic, at a single spatial position like the listener seat, M2s may look more like this:
I know, scaaary!
To the eyes. And a pressure sensor mic. Luckily, with exception of the peaks <500hz or so, not to 2 ears and a brain. Which very very much unlike the single mic, can separate the "direct" streams from the reflected "sum totals" in the measurement.
To get a near ruler flat slope top to bottom like Jason >500hz or so, one needs a near perfectly reflective room. Or significant distortion of the "direct" native response of the speaker (s). Below 500hz or so, the ears do start to "hear" more like the mic, at least amplitude wise, so cutting those peaks are highly advisable. Filling the voids
at that pressure point, where energy is being stored, might be debatable, since elsewhere, spatially, that cannot be. Now of course Jason is using multiple subs, with the EQ, so the averaging has created some smoothing by itself. But most likely by correlating the bass to mono. perfect for pop etc music. For decorrelated bass, like in any acoustic music concert hall, etc, maybe not so much.
Btw, what are your room dimensions?
cheers,
AJ
