Hey Grannyring,
Sorry about your health concerns, hope you get well soon.
I have spent many hours listening to standard, not modified AZ Cresendo Speakers and find them to be a wonderful musical speaker. If I had not purchased the Lawrence Audio Cello Speakers, which are just as musical and the equal of the AZ speakers, I would have considered buying a pair of Cresendo's for my reference system.
So, when you shared that the DI's are as good as a 20K speaker "is hyperbole in my humble opinion" with great vigor and passion I totally disagree with your position. I know I can be politically correct and go back to this all boils down to personal taste and a disagreement among gentleman. However, your statement represents to me the defensiveness of owners who can't accept that a very inexpensive product out performs their very expensive piece. I don't believe that the AZ speaker are any better then my Cello's, and before you retort that yours are modified and better-maybe so, and the standard DI's significantly out performed the Lawrence speaker in my system.
I also do not know what gear you drive your speakers with, I bring this up because I believe the AZ speakers are more for giving, they are slightly warm sounding overall, then the DI's, which are drop-dead neutral, and therefore this could also lead to different outcomes in tonality and bass response.
In my humble opinion, your statement is hyperbole regarding the hyperbole regarding what the Tekton speakers can compete with on the high-end market.
PS: There are at least three professional reviewers who have shared to me that they "are eating crow" because when they first read my review on the DI's they thought I was on the take or drinking laced Kool-Aid to say they were better then the Cello's, until they got to hear them with their own ears. All had reviewed or owned speakers above the 20K price range and admitted the DI's were at least as good or better then the much more expensive speakers.