OP,
I wasn’t paying enough attention. I just saw the prices you mentioned, I would not personally spend that unless I had young ears and could readily tell the difference.
Hasn’t anybody found a nice SEAS or SCANSPEAK, MOREL, DYNAUDIO, FOCAL VIFA something that costs a heck of a lot less and sounds darn good.
You could use my favorite test tools and see what the working diamond one is giving you at the listening position, (and learn a lot more about them and your space).
I could help you find a used copy of this CD with 29 1/3 octave test tones
you need a hole for tripod mount on the bottom of the spl meter to set it at seated ear level
make a chart, see what you are getting now, later see what your replacement’s are producing.
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My JSE Model II’s: The Dynaudio D21 tweeter’s were famous for burning out, and a variety of alternates were eventually touted by the original maker, owners, advice from Madisound, Parts Express ...,
2 of my friends have 3 pairs, 3 different tweeters, crossovers messed with ... they now say they would stick with the lower price, they truly cannot hear any difference except when you suspect yourself of hearing a difference because you want to.
I’ve haven’t directly compared, or have they documented measurements, but we heard very familiar music in their and my systems, OEM and variety of substitutes, and all were excellent, involving, not too bright, nothing lacking ....
How young are your ears?