Usher DMD tweeter upgrade: worth it?

I wonder if Steve Morey (sp?) is going to have a field day. Doesn't look like Usher's DMD drivers are real diamond, probably some kind of various ceramic. It's breakup mode is 24KHz...I mean really? A cheap 1" aluminum tweeter breaks up at 23KHz, "real" Beryllium domes breakup close to 40KHz and B&W's "Real" Diamond tweeters breakup even higher, near 50KHz.

$199 is right, these are garbage tweeters being paraded as $800 upgrades.

http://www.avhub.com.au/images/stories/australian-hifi/reviews/2013/2013-07/usher_audio_dancer_minix_diamond_loudspeakers_lores.pdf

I took the plunge and bought a pair of the DMD tweeters last week. Hey, I figured if I didn't like them I would just reinstall the Be tweeters. It took all of about 30 seconds to realize the DMD tweeter is superior. Wider sound stage, More pinpoint placement of musicians and vocalists within that sound stage, More detail and at the same time smoother and more extended. I know that sounds like a contradiction, but it isn't. No shrillness or harshness here. Just smooth extended treble. I bought them from Fred at Katli Audio in Chino Hills, California. I ordered at 3 pm and he had them in the mail that very same day! Great service and a worthwhile upgrade.

Danoroo. Agree completely with your opinions on both the diamond tweeters and about Fred. Fred is terrific - Usher is lucky to have him as their US distributor.

I do love people spitting bile about things they know nothing of, breakup at 24khz? I've never heard it and more to the point hifi choice completely disagree with you as do their tests , I believe the correct phrase you are looking for is 'lift' , also B&W diamond tweeters 'breakup' (your words) at 15khz not 50. See review (http://www.hi-fiworld.co.uk/index.php/loudspeakers/65-reviews/511-usher-dancer-mini-two.html)

Now the lies have been dealt , I have owned my BE718DMD for a while now, they are quite simply outstanding speakers , every time I change something in my system, good or bad , these speakers tell me exactly , speakers cables , source , interconnects, I can hear it .

If you like warmth stick with the BE , if you crave detail , soundstage and realism , the DMD is for you.

I see several people saying that this driver can be purchased for less than $200 from Taiwan.  Where can this be bought?  If I am going to experiment, I rather risk $200 than $700.