The Linn DMS Isobariks from the 80s were like this. Midrange and tweeter on front and top. I'm sure the measurements were disquieting, and the imaging was lousy... but the speakers did sound great.
A bit coloured too. But triamped DMS in my bosses house were a joy to listen too.
dave
As I was reading this thread, I felt like I was maybe learning a little, but, then I realized I was just learning that I don't know s**t. Sorry for the distraction, I'll shut up now, please continue.