JBL 2212 woofer thiele small parameters HELP!

Dear JBL Friends!

I'm looking for JBL 2212 woofer thiele small parameters but I can not find anywhere. :(
I would like to re-magnetization but I can not find anywhere original the magnetic field values.
The speaker first series vintage JBL 4311WX. It is provided with 2212 woofer.
The original 4311 manual only 2213 woofer recorded in. 2213 original the magnetic field values 10.000gauss or 1Tesla or would i need 2212 original the magnetic field values.
The 4310 It is provided with 2212 woofer so I looked original 4310 manual. The 4310 manual he writes 2212 woofer original the magnetic field values 9200gauss.

What should I do? 9.200 gauss or 10.000gauss values choose?
Please, help me!
Thank you very much!
Best Regards, Thomas

Welcome on this forum Thomas,

Be patient, somebody will answer very quickly
Best regards

itofa a écrit:

Welcome on this forum Thomas,

Be patient, somebody will answer very quickly
Best regards

Thank you, I am waiting! :)

The 4310 (1972) it came out 2212 woofer and 9.200gauss.

The first series 4311WX (1973) came out 2212 woofer and 10.400gauss

The 4311WX-A (1978) came out 2213 10.000gauss

Why not the same gauss values? 4310 (2212) and 4311 (2212)?
I can not decide 9200gauss or 10400gauss choose my own 4311WX 2212 woofer.