I can't make any sense of the polish website, although it does look similar to the Monacor you linked to.
I'd start with removing your tweeter and getting any numbers/info you can off of it, then contact the manufacturer of the tweeter and see if you can source a replacement diaphram for it. That will be a good deal cheaper than buying an entire new horn and driver.
Originally Posted by GlennW
In defense of the body bag manufacturers, I doubt if they build them strong enough to prevent people from trying to escape.