Can anyone identify the model of this speakers?

I really need experts help!
My audio-friends and me - we cannot determine the model of this speakers. I’ve looked through almost all possible images.
Presumably of German origin, early 90s.
There are no signs inside.
Inside the acoustic: Vifa speakers, Mundorf capacitors, Eagle Calypso wire.
See photos at the following link:

Thank you very much in advance, Alex