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In Reply to: Altec compression driver posted by rjdcan on February 12, 2007 at 11:12:27:
Well if you overdrive them the diaphragm can clack against the phasing plug. And sometimes the aluminum suspension fatiques and cracks and that can make a random noise.
Follow Ups:
Thanks guys. I'll look over the diaphram. I don't listen at loud levels but I do cross them over at 500hz. with a 6 db. active crossover. I can't remember if the 806's were to be crossed at only 800 hz. or not. Been lov'in them for 3 years crossed at 500 hz. with a 511 horn.
Pretty low for that driver.
I used 806s on 511s at 500, 1st order. They never clacked but I wouldn't be surprised if they did, in fact I was kind'a surprised they didn't. JBL 2420s I used the same way clacked like chickens.
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