Armadillo, tapped horn

bitzo wrote: yes, just like every tapped horn I think. But....I don't know what does it means, may be phasing cancellation at certain distance?
and...how can I calculate this distance?

Tapped horns usually have constant expansion from S1 to S4/S5 and no rear chamber in Hornresp. That looks like a rear loaded horn.

rear loaded horns have a rear sealed chamber, this design the speaker fires into its own the horn path....

I'm gonna have some thinking about this cab, thanks to new Stipe teaching.