Thank you for the prompt response.
I don’t see the x11 suffix on the product or documents.
This speaker was manufactured by SRS Labs shortly after the product line was spun off from Hughes Aircraft (c. 1993).
I believe this would exclude any Sony C11 products.
I will continue to investigate.
Along with this speaker, I am in the process of listing:
2 Baser-1 8” subwoofers2 sets of matched ORB-1 tweeters and ORB-2 woofers All purchased from Hughes Aircraft in the early 90’s, all in original boxes with original documents.
If you or any one you know if interested.