Best large format horns for home use

[juniper]

Are the Kilpsch horns a 1.4" throat?

I would prefer to use a horn that I don't have to modify or use an adaptor. Something 3 bolt with a 1.4" throat

No its a 2" throat so you would need an adaptor. Its a shame, because these horns are so smooth, they have almost no horn sound, and as large as they are work very well even in small spaces.