PRV Audio D2200Ph 2" Driver on 18" x 10" ZXPC Horn in Technical/Modifications Posted February 19 @Rolox, maybe get some wider washers to put between the lock washers and bolts that the drivers come with. Better to err on the side of caution. You will need to open up the mounting holes, I think I wound up going three sizes of drill bit larger. A little wiggle room to centre the horn over the throat. Unless you start gigging your speakers, lol, you won’t need to worry about supporting the drivers. But I did notice almost all of the perimeter horn flange mounting holes on my set have hairline cracks that will need careful attention whenever they wind up tightened onto a motorboard. Nothing that hasn’t happened to many of the other horns I’ve used. For the fun of it, I’m trying the ZXPCs 2-way at the moment with Faital Pro HF200s and a Crites passive made for these drivers crossing at 500hz on the big Klipsch K-402. It’s not too shabby nearfield, which is all my room affords. Good to hear you got confirmation for your order.