Hi Bee I am back...
as you can see in the picture this is one of our tower. We ar surching for some good Tops. I would prefer radial horns maybe 4 of them with 2" or 1" drivers. But saw yourTopbox design looks also good. If you have any idea or anybody else or god a good plan for Topbox feel free to answer here.
P.s: The double 15" in the middle is your design Bee if you remember ... just airhole a little bit modified. I put 18 sound speakers in there and run them with 2800 w . They work like Hell .
So everything over the double 12 should be thrown away , meaning the vocal 12 and the tweeter box with the Hohrn ... therefor I want to install a good top solution. It should run from roundabout 2000 Hz up to open end ... propositions or solutions welcome ... and thx in advance guys.