Ohm Walsh Micro Talls: who's actually heard 'em?

" I was sure that a 1/3-octave frequency sweep would reveal an aberrant frequency response"

That doesn't sound like someone who does a lot of testing!
A 1/3 octave resolution is as corse as my software allows to go and I would never use that for serious testing. It's kind of using 10000 iso for 
portrait photography or gravel instead of sand for a foundation not to smart.
Look at the readout, it gives you a feeling for whats going on but thats it.
This readout was me watching TV, not testing.
http://s1248.photobucket.com/user/peterhorvath6233/media/image_zpstgppmvnp.png.html?o=0

There is a huge discrepancy. That is flat response measured and judged one of the best speakers of its time by a leading publication in the industry and yours is way out of the ballpark for reasons unknown. Yours do not look like anything I’ve ever seen measured from any decent pair of speakers working properly. Something is wrong. I doubt it will matter that much but try 1/3 octave on your gear maybe and then apples and apples comparison can at least loosely be made. If not comparable then I do not know what to tell you other than your measures and those from Stereophile  are radically different for reasons unknown.

Mapman being a fanboy is one thing, but questioning and seeing
plenty of frequency charts from 2 different software packages and still think that some thing is wrong (two separate drivers looking identical)  is a little silly. I have been in the audio industry for years
although I'm retired at this point gives me some background to say what you see is correct. Never said I had to make large corrections
but the Walsh driver does what it does and not one bit more....

My engineering experience tells me to believe what you actually measure and not what someone else tells you. Also, many magazine guys, in all fields, are typically writers first and technicians last. And I have first hand experience on that one.
Believe who you will, but in the end it is the result that matters and not the conversation that gets you there.
I love my used 4XOs, but was mightly disappointed in my new walsh 2.2000 upgrades so there is a variance in quality.

Thank you t8kc....

everything I have done it has been on the up and up as I really don't have a dog in the fight.  (just a bit) this is suppose to be for fun not a Paine in the rear end....
I started to deconstruct the spaghetti switch box, and finally removed the switcher  late this afternoon. And I will replace all the nasty cheap stuff  with  

copper or silver (all of them) and I'll replace them with  WyreWorlds  new OFC copper as I do care? I have capabilities of measuring FFT and laser interferometry if necessary. The top plate is now floating on top of the cabinet held down with wing nuts.
The plan is to make a constrained layer part with aluminum, silicon sheets and Finnply, this should be a exciting next few weeks.
I might even construct a 10 inch F clone from some  very cool materials as I was privy to at my last job in material sciences...

1/3 octave is like driving a Beetle, my preference would be a Porsche Gt 3 RS  that allows much much higher resolution...🇸🇪
PS. The McClaren 650 S is even better, lighter and cool as..s#*_!