These were all done after the recap except for the spectral decay.
Individual drivers near field:
The levels and distances were not carefully matched, the mid was measured too high in level.
Response at listening position:
Well controlled bass, and a nice gradual sloping response after 10k.
Thd remains below 1% for most of the spectrum.
This was taken before the recap and one id like to revisit. I believe the reading at 5khz is interference from the computer or the environment. Otherwise it shows a fairly clean decay with some mid range hash but no severe resonances.
For speakers made in 1979 I think they measure and sound excellent. The down side is the extremely low 85db efficiency. Even with a high powered amplifier you need a very dynamic (over 20db) recording for any sense of impact.