Does anyone or can anyone provide photos of the Input/Ouput cards that plug inside JBL's External DX-1 Crossover?

I'm chasing Input/Output cards made for JBL's XPL-200 speakers.

These Input/Ouput cards are like personality cards made for a particular speaker for use in the crossover kits.

I'm also chasing the schematics to build these input/output cards and if anyone has any blanks or any to sell, I would like to hear from you.

Any help would be much appreciated!!

Cheers
Pasadena