Thanks for the replies on this but I was wanting to know how the sound compares to the Altec Model 19 rather than the physical makeup.
I know, you want me to step in the doo doo.
Let me put it like this:
The model Nineteen would be the final iteration of the famous and legendary 2-way, Iconic loudspeaker system from Altec.
It began with the now highly coveted Lansing Iconic speaker system of the 1940's. In the 1950's the Altec Lansing Corporation would revisit the design with a lowboy type cabinet(826A Iconic), and then on to a more traditional aspect ratio known at first as the model 846 Iconic. It would later(early 1960's) be re-named the 846a Valencia.
Circa 1973ish the Valencia would be revised to the 846B model, system impedance dropped to 8 ohms, crossover was revised, and the cabinet was given tuned ducted ports, something off the beaten path for Altec.
Late in 1974 the 416B woofers and 802G compression drivers went into production. They were significant revisions from the previous models. By early 1976 the engineers had designed a new speaker system specifically tuned to, and engineered around these newly developed drivers. It would be a whopping success. It would be the model Nineteen.
In a nutshell, and IMO you really cannot compare them to NIneteens as the nineteens enjoy more modern engineering and component technology. For many the Nineteen is Altec's flagship, and with good reason, it's all about the sound.
Nineteens do need a fair amount of space and are sensitive to the acoustic quality of that space. In the average home, average size rooms, it's more often going to be easier to get the most out of the Valencia type system, where the Nineteen really needs a bit more room to be at their optimum.
Nineteens with proper component load and in proper nick can reveal the subtle variations between very high end upstream gear, don't let anybody bullshit you that they are obsolete or outdated.