Thank you for the reply, I have followed the instructions and I think this is a limitation of the 2d plan view.
In the first screen shot you can see the line weight change to .5 and it get thicker as expected, but is not make up of a solid line it is a bunch of dots (not sure the technical term on this). In the second screen shot I change to an orthogonal view and it gives me the weight I am looking for, but it no longer representative of the conical speaker coverage pattern in the graphic.