I have a purchased a pair of Dali ikon 1 Mark 2 speakers and I'm more than happy with them for the price they offer a good degree of accuracy and respond well to my amplifier the Rotel ra-10.
during a manic drunk up session last week the speakers got accidentally turned up to 12 and this was too loud for my stereo, even with in the space of 1 minute the speakers had started sounding fuzzy and old.
on the advice of a contact over the Internet who informs me that there was a residual charge in the driver's which was affecting the performance I left the stereo off for 3 days and during this time which was for the charge to naturally dissipate they had magically repair themselves!I'm not sure but this may only apply to ribbon speakers.
I'm so happy I still have a stereo and I want to share this information with everybody because it could well save someone from throwing out a pair of speakers which could have been reused given a little bit of a rest.