http://www.audioheritage.org/html/pr...ogy/1500al.htm
Here it is, and it is good reading! The more you search through this forum, the more you always find something you never knew, THIS forum more than any other audio forum REALLY educated me on things I had heard of but never saw or heard. My uncle had always told me JBL once made folded horns like the HUGE Richard Long Levan Horns, made famous in the 70,s at NYC nightclubs like Studio54, and THE PARADISE GARAGE. And here in our library I found the articles and pictures about Shearer horns, and WOW, striking similarity of early bass horns from the 30,s and 40,s and I began to really understand how influential, and how long ago James B. Lansing pioneered what the master audio designers of the 70,s and 80,s were doing!
Not to mention the fact that this site also has a huge number of absolutely brilliant people and we are made up of hobbyists, DIY,ers, semi-pro and pro sound people, there is just so much knowledge available on audio here. EVERYTHING from A to Z, and soup to nuts. Driver restoration, cabinet refinishing, cabinet tuning and design, system design, system restoration, electronics, xovers, how to on just about anything audio, CUSTOM designed and built cabinets, even HORNS, and whatever else you could possibly think of.