JBL Hartsfield 1955 - 1964

This is one of the classics. While it didn't have the longevity of the Klipsch bass horn designs it is still a classic. I would love to hear one of these beauties. The bass bin horn path was changed in 1964 and this is the version I am most interested in hearing. They also extended the top end beyond 10khz with this redesign. I haven't found a picture of the 1964 model yet but I am still looking.

The audioheritage website has a great write up of this classic. This is the place to start any research on JBL designs. It is a treasure trove of hi-fi history.
http://www.audioheritage.org/html/profiles/jbl/hartsfield.htm The Hartsfields biggest update was in 1964 which unfortunately was its last year in production and a mistake imo. It should have been allowed to evolve.