Bub, do you have any idea what difference a 16 ohm driver might make? Do you understand the term "amplitude response"? Genuine question because you still seem to be under the impression that your drive units would sound different whereas ATC themselves confirm that they really wouldn't.

I'm sure Bob would have let you know if he'd replaced the midrange domes - you would have noticed the shiney new dome as well - even when they are seven foot up in the air!

Bub, there's lots of people who think they sound wrong in some ways. At no point have a said they are a bad speaker - merely that they are flawed. As you listen so far off axis, you probably wouldn't hear small levels of 3rd harmonic emanating from the dome. Hey. Enjoy what you've got. Just please don't try to tell experienced listeners who don't get on with them that they are deluded. The measurements support our case to some degree.