Quickly, checked some JBL listings for whatever equivalent or replacement, no luck. Plus 2417 not on it so no hope there. However 2415 and 2416 are present.

FYI, diaphragm wise 2415 is D8R2415, 2416 D8R2416, BUT the list also says D8R2415 is a possible alternative for 2416 ! True or typo i don't know. No critic intended but could it be a user error?

Short story. I was looking for a possible tweeter replacement. One of the known aftermarket places had one which they presented as a virtually drop-in. Among the little specs given DCR and power capacity were pretty off, plus the quality didn't seem that good, so no deal. Maybe you can get some driver data for the aftermarket? I have factory DCR for the original 2415 and 2416 if need be. It sure doesn't tell everything but its one step forward at least.

Food for thought.

Richard