Then I proceeded to attach the veneered side panel. I needed something heavy as the clamps could only hold the edges. I couldn't find anything of good weight, then I remembered...

Cheers

- Adrian

either way you would have earned it by the time you finish

I'm using a horn based tweeter, JBL 2370 horn flares with P.Audio PA-D45 comp drivers attached and Waynes crossover network will be used on them. The flares are Bi-Radial type, having a radial design in both vertical and horizontal planes, unlike a normal radial flare where the vertical is actually exponential, only the horizontal is radial.

Are you having a midrange horn too? Or just direct radiator midrange? Is it two way or 3 way system?

You could do a conical horn flare for the tweeter if you wanted. Remember though the conical has a negative slope, so use it in a Hybrid form to make the slope closer to zero. The conical flare has reduced phase distortion. See Waynes post "Characteristics of various horn flares" at http://www.AudioRoundTable.com/PiSpeakers/messages/1623.html for details on Hybrid forms, etc.

What sort of dispersion do your Corals have?

So do you actually plan on building some conical HF horns by yourself? I built some midrange conical horn flares that I modelled in Hornresp, but I don't think you could model a compression driver in there (mostly due to lack of information). If you really wanted to, you could build a flare that gives you the dispersion you want etc, and then build the Hybrid section and attach the comp driver with a mounting flange like the ones Bill Martinelli uses on his woodhorns. Then keep taking freq response measurements with speakerworkshop and changing the expo/hyperbolic "hybrid" section until you get the response curve you want. Its quite a lot of work though. I did a lot of this measurement stuff and experimenting with the midrange horns I built. For a HF horn, I would rather just buy a ready made one as theirs some very good ones out there. But if your up for it, give it a shot!

Adrian

Bill makes some really nice horns ey. Its cool your building your own though, you'll feel really good about them when you finally get it to work exactly as you wanted. I know I did when I finally got my midrange horn to work properly after three different prototypes and hours of experimenting with various things like front and back chambers, phase plugs, throat size, etc.

Why don't you want to use any resistors in your crossover network?

Perhaps you could benefit from Waynes compensation network on your magnavox horns seeing as you say your missing out some of the top end. I guess you cant really know until you take a few freq response measurements on-axis. Use Speakerworkshop.

Adrian

Above shows the whole thing tipped on its side. That fibreglass you see is not really needed. The section it is in is completely closed off from the woofer chamber, its just wasted space actually. So it was probably a waste, but oh well - I got a ton of the stuff anyway.

Above shows enclosure with sides attached

Above shows box with sides and top attached.

Still gotta attach all this stuff to the other tower, then I gotta put in the lips for the back panel, as the top half is removable. Then all the odds and ends, like sanding down bumps, cutting and drilling holes for terminal cups + components, finishing etc.

Those speakers are coming along very nicely!