Et oui !When looking at active speakers like genelec or Neumann. There is definitely eq happening throughout the whole frequency band to achieve such flat responses. I would like to see the raw tweeter data with no dsp compared to the finished product. If you want to amend a short coming of a freq response of a passive speaker at a particular frequency above shroeder what's wrong with that. It's what genelec and Neumann do to achieve the spins most people seem to drool over. At the end of the day it's your ears if it doesn't sound right it doesn't sound right. One particular practice is not the end all be all way. Experiment test measure but at the end of the day press play and enjoy yourself
And they do not provide buyers with their speakers and the small interface box, the microphone and the software allowing them to integrate their speakers into the room... a professional measuring microphone costing more than 1000 or 2000 euros of such fragility that a newborn is Hulk, but a calibrated-calibrated microphone whose quality is more than sufficient to make an in situ measurement as long as its characteristics are integrated into the measurement software...