[Tractrix vs. exponential]

Impressive. You guys are great... Sincere 'thank you' to all who posted. The demonstrated understanding and clarity is more than I expected (although, this is the first place I thought of as a source of true and correct info).  Thanks, again.

 

[As an aside: In my experience, complex and esoteric subjects (eg. astrophysics, cellular biology, color theory] can be explained to children in a meaningful way. The limiting factor is not so much complexity of topic as it is the understanding of the one doing the explaining. ]

[Tractrix vs. exponential]

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?

[LaScalas and Cherry RF7IIs]

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!