Thanks for a really interesting and informative post.
Have you any recommendations for damping material?
Feels a little scary to remove the horns from the box.
I will try another thing first. I read on another forum a post from a guy having the same problem. He got the advice to experiment with toe out. I have tried many placements, but not that.
Actually, I like the British polite sound more, but I can´t find any speakers sensitive enough for my 12w SET.