robertbartsch
01-12-2009, 10:12 AM
OK, so I purchased a pair of 2445 recently on Fleabay from a 1988 vintage and I swapped out the frams using new JBL OEM units.
It looks like the old frams had some minor heat damage on the coils in two places near the position of the + and - connectors.
Is this fairly typical for 20 year old diaphragms? Do Ti frams need replacement with age or do they not "wear" like aluminum?
Each driver from this older set had red wax seals on the screw covers so I assume the drivers had not been opened and that they were probably used in a DJ application.
I'm glad I replaced the frams but I wonder if this is necessary in the future.
It looks like the old frams had some minor heat damage on the coils in two places near the position of the + and - connectors.
Is this fairly typical for 20 year old diaphragms? Do Ti frams need replacement with age or do they not "wear" like aluminum?
Each driver from this older set had red wax seals on the screw covers so I assume the drivers had not been opened and that they were probably used in a DJ application.
I'm glad I replaced the frams but I wonder if this is necessary in the future.