I am new to the forum, coming over from DiyAudio. I am making a couple of diy horns and was hoping to throw this one into the mix. I have found the Walnut horn thread, but there is not enough info to move forward. Does anyone have a copy of the cad layout of these horns.

It will do battle with a Iwata 290 and JMLC425.

Altec 288 as the driver.

Crossing to dual 414's, or single JBL Le15A