Box speakers with ribbon tweeters

[jrhymeammo]

but that's exactly not box speakers I have thinking of.
More like Elac VMPS and others without ...

But in fact most small ribbons and planars are baffled so the rear wave is completely stiffled making them effectively monopolar.

JRA

[Feanor]

but that's exactly not box speakers I have thinking of.
More like Elac VMPS and others without ...

JRA

But the VMPS and most of the ELAC line are baffled-behind in boxes.

Maybe you're thinking of something like the Bohlender-Graebener, below, which is diapole. Apogees use dipole ribbons I believe, although Florian might comment on that.
...

[Florian]

Well all Apogee speakers are dipole ;-) I own a VMPS 626 which uses a monopole ribbon as a tweeter. Its ok, but ribbons can sound very differentelty and are not the same. The best ribbons i know, are Apogee ribbons. Esp. when you use them Fullrange