Has JBL ever made/marketed a dual 18 inch studio monitor?
Maybe something from the custom shop?
Soundworks, a San Francisco recording studio was promoting their "soffit mounted dual 18 JBL monitors". I didn't recall JBL making any such animal and was curious. When I contacted them it turned out they had three 4435s for the front monitors. Impressive, but they are dual 15 inch monitors not 18s.
I have seen Pioneer/TAD installs using dual 18s, and I believe Westlake still makes a refridgerator sized speaker with dual 18s, but I never heard of a JBL model that used that much oomph!