Has anyone lost a KEF tweeter?

I'll add that there are good things and bad things associated with being a physicist and an engineer.  First, you can never fully enjoy action movies again because your brain keeps pointing out all the things on the screen that violate the law of physics.

But may people think doing technical stuff is for other people that they'd prefer to pay--implying that such stuff is beneath them.  But it sure is nice to be able to fix your own stuff.  

Assuming it's your tweeter, and it probably is, I'd pick a pair of aftermarket tweeters that I considered an upgrade and install them. I probably wouldn't wait for KEF to provide a replacement tweeter.  OEMs are notoriously slow with parts.  Of course some big OEMs, like KEF, may make their own tweeters wtih a unique footprint making it hard to change.  I upgraded my tweeters in my current speakers to Be and it was a 30 mintute ob to solder them both in.  They weren't cheap, but it was a good change.

Jerry

Jerry, KEF use that UniQ tweeter inside the midrange design. I’m not even sure there’s a safe way of removing the outer ring without mucking it up. I’m thinking it’s just a snap in plastic ring, but.

Jerry

But may people think doing technical stuff is for other people that they’d prefer to pay--implying that such stuff is beneath them.

This may be more the way you think about it. I think most are thinking they 1) don’t want to void their warranty, if applicable and 2) don’t want to screw up an expensive speaker if removal of the driver is more than just turning a few screws, which is likely the case here.

If you can't source the correct driver from KEF, you may not have many options. There are many different types of the Uni-Q driver. You may have to buy complete replacement units. Call KEF again and inquire about the cost of replacement units. I would also talk to someone in tech help and see if you could use drivers from one of the other cheaper loudspeaker systems and replace the pair with those. Finding someone to repair the Uni-Q driver might be quite difficult or impossible.  

Ask Kef if they will replace the uni-q. Or if out of warranty sell you one. The way these things are constructed, if the tweeter is gone, it will be very hard to replace just that part. When folks have blown their uni-q drivers on the q series or LS50, I’ve seen them get replacements of the whole unit directly from Kef by supplying a serial number of the speaker in question. One used to be able to just buy the drivers for diy but Kef put a stop to that about 8 years ago.

At for how to get it off, I am guessing it is front mounted and the trim ring is glued over the flange. Kef should be able to verify this.

Also, one should be able to test the crossover electronically with a meter to rule that out. Good luck.