Hello,
My brother has a pair of gorgeous looking model 19's that were not working properly, so we investigated them this weekend.
One of them were working properly, but on the other the diaphragm in the compression driver was teared and the low frequency driver had a rub. We mounted the low frequency driver the opposite direction and the rub went away. It will be reconed if it doesn't get any better and the compression driver will get a new diaphragm. The L-pad on the working unit were also given a run with some DeOxit Faderlube F5. It turned out very well.
The crossover network on the other speaker (the one with a blown compression driver diaphragm) shows some weird behavior. There is continuity between ground and all other used ground lugs. For example, there is continuity between ground and the hot wire going to the compression driver and low frequency driver.
What can be the cause of this? Broken capacitors?
He doesn't want to "upgrade" the speakers. He only wants them "restored" to "original" condition, but with better caps if that's the problem and both crossovers will be restored.
I can swing a soldering iron, but I don't know how to troubleshoot crossover components so I need advice on what to measure and what to buy. Maybe Mundorf caps and tighter tolerance resistors would be a good start?
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