new 21" from faital

Awesome design 

spoiler alert, the performance is basically identical to the Eminence.

here is Eminence:

and here is Faital:

for Eminence in the "max SPL" tool i'm using 2500W input and 21mm xmax while for Faital i am using 3000W input and 17.67mm xmax

actually upon closer inspection the Faital does beat the Eminence by a pretty wide margin above 100 hz or so but not sure how that is relevant.  Faital has significantly lower moving mass and somewhat higher power handling so at higher frequencies you would expect it to pull away like this.

but at lower frequencies light weight is not important while xmax is, so it is roughly even with the Eminence.

i more or less expected this result - the reason i did this exercise is because as others pointed out this driver would "shine" in an application where you could see the back of it.  in this particular horn design because you can't see the front of the driver and you need to know somehow if you're driving it too hard there should be a plexiglass window into the chamber ( that also acts as an access hatch for replacing the driver ) and you could conceivably even put some LED lighting in there to illuminate the driver.

if the price ends up being comparable to the Eminence and you're doing an application like this where the back of the driver is visible then sure, i would use it.  it looks very "Italian" while the Eminence looks like some kind of a truck axle or something, which depending on situation might be the look you're going for too.