Either one..........
The 'A' has no mounting holes in the flange since it used a special adjustable bracket for PA apps: http://www.lansingheritage.org/image...orns/page2.jpg
GM
Any difference between a 511a and a 511b horn? Which are the green late 60's ones?
Either one..........
The 'A' has no mounting holes in the flange since it used a special adjustable bracket for PA apps: http://www.lansingheritage.org/image...orns/page2.jpg
GM
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

When I was at Altec we initiated a research project on Pigeon Poo as a low cost substitute for aquaplas....unfortunately a direct hit took out the researcher and the project was scrubbed. We therefore will probably never have curves and data relating to its effectiveness.
I also pointed out WAF might be a factor and that it would have to be restricted to outdoor applications.
Your neighbors called. They like your music.
Not too much of a stretch to imagine how a pole-mounted 511A could get "plas"tered...
http://4.bp.blogspot.com/-WtYDAmAEWp...PigeonPoop.jpg
"[I]We're going all the way, till the wheels fall off and burn[/I]!"
Bob Dylan, from [I]Brownsville Girl[/I]
[I]"Time wounds all heels"[/I]
John Lennon, referring to the Nixon/Hoover deportation fiasco.
Pigeons have a thing for Peugeot, I see.
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