I have bass bins that contain two 8" woofers in each enclosure. Drivers are mounted one above the other. When I measure response with REW, the phase remains flat at -150 degrees from appx 200 Hz up to appx 1500 Hz. The FR also measures very flat in this entire range, which I guess is a good thing!. The microphone is six inches from the baffle at a point directly between the drivers. Is this normal, good, bad? Am I measuring incorrectly? How do I match that phase to the midranges in their own enclosure, which show a "typical" slope of phase angle in that frequency range? I would attach the graph, but I'm such a rookie that I don't know how to do that, so please include instructions in your response if you would like to see it.
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You are a member since 2007, hardly a rookie. You attached images of speakers you were selling...
I think REW does not include the effect of constant delays in its phase plot ...