The first graph I’m showing is one that Newport Test Labs prepared at the conclusion of all its tests and measurements. Graph 1 shows a composite response, where the lab has spliced the in-room low-frequency response (measured using a pink noise test signal) to the highfrequency response the lab measured using a test signal that delivers the response that would be obtained if the speaker were measured in an anechoic chamber.
You can see that the frequency response is not only very, very flat but also spectrally balanced, so that no one group of frequencies dominates at the expense of others — and in particular that the response is not ‘tilted’ to favour
