Mine looks similar to one of yours. I'm not sure about how the phase was handled when I converted measurements to frd files.
Look at the second contour line (each one is -3 db) on yours between 2k and 4k. That portion of the FR drops to about +/- 45 degrees. You can see the same thing on the DI graph, where the DI rises up at 2k, then drops again before rising.
On an all LR4 x-over arrangement, the speaker is effectively +/- 60 degrees up to 5k (pending the swirly cancellation exploration)
When I ran the design you asked for, I used the measured phase.
On an all LR4 x-over arrangement, the speaker is effectively +/- 60 degrees up to 5k (pending the swirly cancellation exploration)
When I ran the design you asked for, I used the measured phase.
I think maybe I understand this better. See if this filter looks more theoretically desirable.
Woofer LR4 @ 400
Mid BW4 @ 400 and BW3 @ 3500
Tweeter Bessel 4th @ 3300
EQ
W -4 @ 250 Q=3
M -1 @ 1000 Q=4
M +2 @ 1600 Q=2
M +1 @ 4000 Q=4
T -2 @ 9000 Q=4
T +2 @ 15000 Q=1
Levels
W 2
M -7
T -8
Woofer LR4 @ 400
Mid BW4 @ 400 and BW3 @ 3500
Tweeter Bessel 4th @ 3300
EQ
W -4 @ 250 Q=3
M -1 @ 1000 Q=4
M +2 @ 1600 Q=2
M +1 @ 4000 Q=4
T -2 @ 9000 Q=4
T +2 @ 15000 Q=1
Levels
W 2
M -7
T -8