carl, if you had never seen the mlissa curves on the focals, ill bet you would never have heard the peak. its pretty damn high in freq and not audible 99.44% of the time and only perverted synthisizer recordings could excite it. had i never heard the w/p set up properely, playing at live levels with NO sense of strain, id think that i was in for the heil experience after reading one of your posts on the focal.. i suggest instead of building a clone, buy a used pair. or do some homework and build something original. sure, fine drivers are pricey, but henry kloss made a business of taking inexpensive drivers and using them for their attributes. maybe in the midrange where most of the music is, you should put a fine driver. and of course, the cabinet should have much integrity. pipedreams started with pvc pipe material long ago.