OK, I took the speakers to a local shop and it is the drivers that are bad, not the crossovers. These speakers apparently have a quality issue where the wire leads between the speaker terminal connector and voice coil corrodes and disintegrates. The tensil lead or wiring of the actual speaker shows a blue foreign material like you find on your car battery that needs cleaning. Eventually it eats through the wire and you have no signal. I read others experiences on other web sites so this is not uncommon.
As of now Revel has decided to not repair or take part based on the speakers passing their warranty date. They will no longer respond to my e-mails. The speakers have been dormant due to this issue for quite a while. I just dont understand a speaker that is made of faulty material that eventually self destructs ($8000/pr!!) and I am left to handle it myself. The center channel, the C50 is well on its way and is now very distorted as the signal is corroding away..