BugC,

Thanks!

Ahh...I think you are referring to the JBL 1234 horns not the Altec 511. The JBL drivers are 2470's and currently with the original phenolic diaphragm. I just received the replacement aluminum (orig) diaphragms to convert them into a 2420 (same pots according to my reading) but have not installed it yet.

The green 811 horns have an Altec 802-8D on them.


Abe