Maybe he has done that?
The bigger issue to me is do you run the 19's full range and just add the subs in?
Or do you build a 2 way crossover that limits the 19's and uses subs only below say 60hz or freq of your choosing?

I did the former and use the Altec 18" 8184 subs. (There, now the topic is not OT)
Anyway, what I still need to do is add an adjustable phase unit for the subs because I do get some cancellation at the crossover.

I can say that the subs are really awesome for just what Juniper describes.

Ron