Does anyone know which "theater type speaker" Paul Klipsch measured for his early La Scala paper (he did not mention its name, but just called it a popular "theater type speaker"). Was it the Altec A7? Or perhaps the JBL C55 with 154 and 375 with horn lens installed? It seems to me that the bigger ones would be just too big to be rivals of the La Scala in a home. The La Scala did better, particularly in the frequencies above 10K.
Does anyone have that article they can post? PWK did at least two articles on the La Scala. In one he presented La Scala v. a "theater type speaker," and in the other he surperimposed graphs of the La Scala v.s. the Klipschorn in the bass, since that would be what everybody would be asking about.