Dear @DonVK and @fluid ,
I’am trying to design a diffraction horn for use with a B&C DCX50 compression driver. I’ve read yuichi arai’s book about diffraction horn design but unfortunately he doen’t explain how to derive the horn side contour analytically. This weekend I tried to investigate on this. Judging by the measurements he includes in his book, it looks like in the A300-E design he uses the height contour (from excel tool) of the horn decided by 1.5. In contrast in the A290 seems to use a narrower contour i.e. height contour divided by 2.
In your blogpost (https://sphericalhorns.net/2023/04/09/the-mk3b2-radial-fin-horn/) you depict a top view from your optimized horn. How did you come up with the side contour? Did you derive it from the fin counter generated by the excel tool? It looks more rounded. Obviously u have chosen half channels on the sides with a straight outer wall.
I’am trying to design a diffraction horn for use with a B&C DCX50 compression driver. I’ve read yuichi arai’s book about diffraction horn design but unfortunately he doen’t explain how to derive the horn side contour analytically. This weekend I tried to investigate on this. Judging by the measurements he includes in his book, it looks like in the A300-E design he uses the height contour (from excel tool) of the horn decided by 1.5. In contrast in the A290 seems to use a narrower contour i.e. height contour divided by 2.
In your blogpost (https://sphericalhorns.net/2023/04/09/the-mk3b2-radial-fin-horn/) you depict a top view from your optimized horn. How did you come up with the side contour? Did you derive it from the fin counter generated by the excel tool? It looks more rounded. Obviously u have chosen half channels on the sides with a straight outer wall.
Attachments
You would need to ask @docali for that information. He created the spreadsheet that calculated the flare rate (not constant) that produced the side contour.
