Endo

1. In simple terms, how exactly does a tractrix differ from an exponential horn in its design? 2. Also, what might be expected if the exponential horn from an earlier Heritage series driver were switched out with an equivalent Traxtrix version? From a listener's point of view, are all frequencies equally affected? (I'm particularly interested in hearing from anyone who has experienced this). 3. Anything else of interest?

I understand the previous owner re-painted them, and that the badges are missing... how about the inspection and serial number labels--are they still on the backs? Any more photos? Thanks!