unfolded length of Khorn

[Don Richard]

Keep in mind that there are two exit paths so I came up with 57 for one and 57 for the other. They wouldn't be added together. And you would probally have to apply some spooky math because each path is 45 degrees off axis from the mid driver and tweeter center line.

It is not necessary to consider that part of the bass horn if it is being done for time alignment purposes. You want to align the acoustic origins of the drivers. The diaphragm of the mid driver is near the tailboard in the corner and the starting point of the bass horn, for alignment purposes, is the cone of the bass driver. That's roughly 3 ft., depending on the depth of the EV horn. Start with 4.5 ms delay and use the invert and null method as described previously. Use a SPL meter at the listening position for an accurate null reading. If this is a two way setup, that's all there is to it. If a tweeter is used, measure the distance between the tweeter diaphragm and the mid diaphragm, multiply by 1.17, and add that number to the delay number for the mid. That is a good ballpark figure to start with, then do the invert and null process as above.