Sorry Yes I did on my enclosure last year, i thought you meant the rounding off the end port. Gained .3 db not sure of the any gain of the end port though.j/w, numerically speaking have you ever tested how big of a difference the rounded corners make?
tuning frequency? //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gifYou sure are wasting a lot of time...
nG