Three questions:

1. What is being used on the back of this particular mid horn w/o
the box shown in the plans?

2. What sort of mounts are holding the mid horn and tweeter horn on?

3. Could I see a picture of this particular speaker ( or one like it)
from the rear?

I really like the look of your "open" mid horn without that big honking box that kind of looks like a slice of K horn. Plus, it would be one less building project.

Thanks,
Russellc