1803B horn plans available?

[Audiomind]

FWIW, getting the ?airplane wing? shape is not that hard once you have plotted the interior curves for the individual cells. First, you build the individual cells with a consistent wall thickness. Next, you the build the vertical sections. The first step in building the vertical section is to lapp the cells so you get to zero thickness on both entry and exit sides. For each vertical section you would lapp two opposite sides of one cell for the center and one side of two others for top and bottom. The next step is to glue the individual vertical sections together and let them dry.
Now that you have the vertical sections assembled you lap them so they fit together in the horizontal plane. In the case of the 1803, lay each assembled section of three on the lapping surface and remove just enough material so all four corners zero out. After you have done that you can assemble the required number of vertical sections together to complete the multicell portion of the horn.
Simple really, all you need is more time than money and a bit of hand eye coordination.

Having seen a few different build pics I would say it is well within my capabilities, and yes simple, that is if I had the dimensions, looks kind of fun actually......now back to getting those pesky dimensions....

After doing a little research on the Hornresp program I really want to copy a factory horn as
several people had commented that Hornresp is only a starting place and does not really tell
you how the horn will sound.

I would imagine the factory design probably had quite a few tweaking hours on the design that only comes from listening......and tweaking...and listening...etc. darn I kind of wanted that 250hz cutoff 15 cell with the driver throat visible in the center..hmm sounds like a Vitavox might fit that description but then I wonder if it would like the Altec 290 I am going to be using as much as an Altec horn??!!!!!..........can I win here? Big 15 cell Vitavox horns with Altec drivers any one here tried it? Love to hear about it if so.