The marketers may call it a compression driver, but it isn't, and I am not the only one to call that out. Klipsch speakers used to have a compression driver.
This is a picture of a compression driver.
This is the replacement dome for the RF7.
There is a hot market for that part, as people burning them out is common.
That speaker has a dome tweeter at the mouth of a horn, no matter how Klipsch advertise it.