turk 182 -I will look up ProSound and try to post.
Hello turk 182, in the above pix I have the EV ST350A tweeter, EV SM120A horn with an EV 1824M driver, and two EV 15B woofers. The bass box is sized as a 7 cu/ft center slot ported tuned at 43Hz. Similar to the EV TL606B with 15Ls. Mine would be a TL506B that EV didn't name, per DBKeele.
The speaker has 107dB/W so the pair is 110dB/W. The 15Bs are Pro-line.
As for my LaScala it has always been the center channel for my modified Klipschorns, I also have a pair Belles for rear surround duty. I have an EV 15B in the LaScala, also I sawed off the top portion of the Klipsch box, added two pcs of 3/4 plywood to the outsides of the bass horn and changed the mid horn to the EV HR-90.
I also needed a Large horn and BR sub