FWIW, I found the Carbon 7’s surprisingly bright, based upon what I’d encountered in reviews.
If memory serves, you’ve had brightness issues in your listening area for many different products and it’s largely the fault of your room.
I’ve tried Fritz against many other speakers. It is NOT a bright speaker. I’ve tried it not only in my treated listening room and in my untreated basement -- which is neither bright nor dull.
Speakers plus rooms make brightness. If your room is bright, don’t blame the speaker. It’s soft dome tweeter, after all.
Oh, and people bring panels to shows for audio because they don't know what they're going to get and at least need to deal with unexpected issues -- this is NO proof that the speakers are bright to begin with.

