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:
https://www.icloud.com/iclouddrive/06dQIn1O12CFEpuzwMi9WLsWg#acoustics

Thank you very much in advance, Alex
baldaris
Thank you for attention. The speakers sound very good, dynamically expressive and very detailed.
I apologize for the inconvenience with the link. I created a new link with photos. and continue to ask for help with the identifying of the acoustics model. Thank you
https://photos.app.goo.gl/vhSULKYV5J8Ez8ay7
They don't look familiar to me. Is that a port on the upper back panel? If so, what it that on the bottom side panel?