^ If I understand your post correctly, you think I was implying that the un-gluing was a positive trait of the Diamonds? I was trying to illustrate the potential value that a warranty can bring with it in terms of car audio equiptment.
Even Focals are not imune to trouble. A quick read over at caraudioforum will reveal users who have had their Focal mid-bass cone material come de-laminated. Focal may make 75 thousand dollar home speakers, but I doubt that their cheaper car speakers are as well made.
My point is not to bag on Focal, who unquesionably makes nice speakers. However, it is a fact that car speaker failure rates are enchanced by the less than ideal environmental and electrical conditions to be found in the automotive environment. As such, I feel that - with regards to component speakers - purchasing from an authorized dealer can save headaches down the road.