Stereophile’s measurement suite was unexpectedly advanced in the early 90s

[Lopsided]

Stumbled across this suite of measurements by @John Atkinson of Celestion SL600Si in combination with DLP600 digital EQ. Impressive investigation. I admire JA for his sometimes educational articles, like the effect of altitude on ribbon tweeters, or the detailed descriptions of the making of a jazz album.

Now its time for Amir to investigate Minidsp and Dirac in time domain! Or for Stereophile to upgrade to a Klippel system.