I have a 3 way pair of SoundTech LS5 speakers - 500w continuous into Eminence 15's, a 6" mid and a 1" tweeter.

AND a pair of single 18" subs. The subs were bought as empty boxes from the Ebay company S&S and loaded with Eminence 18" speakers that handle 800w continous.
There is a built in crossover for the tops and the subs are wired direct. See the pic's.
The SoundTechs I bought new when I worked for the company. They were made in Mundeline, IL! The subs are made in Florida..
All American made cabinets!
NO DELIVERY! Pickup only.
Asking $600 for the 4 cabinets!