Quote Originally Posted by Old Guy View Post
Ev made a driver to fit that horn as I explained. EV throats are bigger than you suggest. I never heard of 1.29 and the 1.3 is actually about 1.37.
I was just reading off the spec sheet. I haven't actually measured the ones I have sitting here.

As I was looking at the HR60 and the HR120 I noticed an oddity. The 60 has a hole that only expands as the horns cross section grows. The 120 shrinks down to a square and then grows. I'll have to get pictures.