Graphs below were taken using different baffle widths on a B&G RD75 driver. There were in total 7 measurements, represented in two overlapping graphs. It is easy to spot the boost in the lows because of the reduced dipole cancellation. At the same time we see what I believe to be baffle diffraction induced effects, shifting down in frequency as the baffle size increases. Makes me think about building a slim, tall backwave trapping monopole and checking out what that frequency response is all about. Just a matter of time ;-)
1/6 th octave smoothing of the curves was applied to keep an easy focus on the magnitude contour without loosing too much of the detail. Please remember that these are raw drivers without the notch filter installed.
No Carver plots as I ran out of night time. The law of dipole low cancellation and baffle diffraction are also true for the Carver 60" driver as I verified in a couple of plots.