Altec in the disco era....

[Alien_Shore]

Thank you Bowtie--I had assumed alien_Shore was joking in his post. .

Yeah, glad the humor was apparent. But seriously, from what I've read, by the time Disco was in its heyday (78-82?), JBL was dominating, Altec was declining.

The pros here can tell you what you're looking to know - I would expect that most respectable disco installs would have been custom work for pro sound reinforcement contractors, and most of the loudspeakers would have been JBL.