Does anyone know these?

[Radian]

I have seen these in a music academy today and find them interesting.
They are only about 6inches wide.
I would really like to listen to them but it's vacation time in Bavaria.
The sticker says Seeburg GL 16 vox
Cylindric Wave Radiator

 

[AllenB]

It's simply a line array with unity mids. The fins may be questionable, although they make an excuse for bracing across the horn. You could always use a few compression tweeters with line array adapters to make this yourself.

 

[Radian]

One unit seems to have 4 normal individual tweeters in it and a 5 inch low/mid cone.
Seeburg used to be very expensive. Way back they used Altec bass and compression driver units.

 

[studiotech]

https://www.seeburg.net/en/speakers/gl-16/5

There's a taller version too, the GL24.

 

[Kev06]

I agree this is interesting, thank you for posting it. I've not seen such a design before.

With something so narrow, horizontal directivity control isn't going to extend very low in frequency. I wonder if the design intention might be less towards proper unity/synergy territory, and perhaps more of a simple coaxial-like arrangement, just built tall, into a line array?

 

[studiotech]

Similar in design to JBL CBT70 and 1000 series too, just those are passive cabinets.

https://jblpro.com/products/cbt-70j-1-plus-70je-1-system#product-thumbnails-4
https://jblpro.com/en-US/products/cbt-1000