Following graphs were taken using different sizes baffles with different drivers. Clearly shows a gain in the low response with wider baffles. A 16" inch wide baffle seems to be a workable size.
The driver stand is capable of quickly accepting different sizes of baffles. There is room for a more detailed study of baffles using a 2 inch increment. Lack of time did not permit to do this yet.
Increasing baffle size yields gain in the lows. Notice also the dip getting deeper at about 700 Hz. A similar dip shows up in the B&G graphs. This dip might be caused by the size of the supports for the drivers. This will require some modifications to the set-up and another day of testing.
Again, notice the gain in the lows and the "mysterious" dip around 800 Hz in this case. The graph below actually belongs with the Carver ribbons. These measurements were taken at a lower sample rate with 8 averages for increased resolution. The color of the graphs for each trace to not correspond, the legends however do so.
Next graph is a low frequency plot of a B&R RD-75 without baffle, a small 14.5" baffle and a 62 inch baffle. It is the same driver as the one depicted in the second graph on this page. Please note that the colors don't match curves, the legends however do.
The longer ribbons show clearly an improved low.