Measurements of JBL 2220, anyone?

[Omholt]

I have two JBL 2220H drivers that I bought used. They have been re-coned but I don't know anything else about them. Both drivers show resonances in the impedance graph as seen below.


Are there anyone who have JBL 2220 with original membrane that can measure the driver and post it? Rewards are waiting in heaven.

 

[Old'n'Cranky]

All things JBL - Lansing heritage forums.

But be warned, some there can be rather fanatical.
For example, unless your drivers were reconed with genuine (unavailable) cones, some will be upset..