Wayne Parham Messages: 18789 Registered: January 2001
Illuminati (33rd Degree)
The Helmholtz forumula makes no provisions for flares of this sort. You may have to come at it from an empirical point of view. I would suggest that if you just radius the edge, you'll probably not alter the Helmholtz frequency very much. But you can always double-check when your done to be sure.