JBL 60´s PA High-MID Cabinet Modell "PAL 150" unkown

[Jblalnico]

Hello,
as you can see in the pictures above i have a JBL pa High MID Cabinet Modell PAL 150

i can't find any information about it.

I didn't open it yet, but i'm sure it contains 2 x 075 Tweeter, one midrange Horn , and an frequency divider NW LX13

I think it was built in the nineteen sixties in Germany.

Does anybody ever heard of something like this?

[ATTACH]



Thank you Martin