We had these speakers in our dance studios at the last University where I taught. I can't for the life of me remember who the manufacturer is, nor can I find them online. Anyone know?
They don't look like sound sphere, I would say either Sound Tube or JBL pendant speaker. If you can get to the speaker itself there should be a model or at least manufacture on it. Otherwise do a search for Pendant Speaker and you will find lots
Yep Soundtube, can't find a model but looks like they were used pretty extensively at Universal Studios. I may be able to find out from some people over there what they are. http://soundtube.mseaudio.com/installation-gallery/
Edit**
Looks like maybe the RS600 or 800, can't tell scale from your picture. The updated version is the RSi series of speakers from Soundtube