Dave M wrote:Yes now I was going to say that.
The builder has got the node line right out near the edge of the top. This means that there is more top surface radiating sound in the monopole mode, and less of the out of phase area thus giving greater volume. Similar testing on my builds puts the node line a good 25/30 mm in from the top/ side joint. I wonder how he achieved that. Even more pronounced in the cross dipole mode.
Do we know what sort of linings he used at the top side joint?
Did you have the bridge on when you ran the dipole? I never do but it will make the center of the top rather stiffer across the grain which will affect how that mode looks IMO.
The pattern is rather wide, meaning to me that he put a ton of glitter on there and that it settled where the top isn't vibrating. I don't think there's much you can say about the guitar from those two photos but I certainly have heard good things about this builder.