What is the use of using the spinorama data, once a microphone etc is at hand at home? Of course the EQ could be applied virtually, the calculations for some rating can be redone with EQ in charge. But, as far as I see, the alterations don't exceed 3dB anywhere, which is quite within a tolerance band that was once defined related to human hearing. Ja, the upper mids are a bit hot. But, how does it look like, if the reference axis changes, e/g by exaggerated toe-in?
The addressed potential customers of this little cheapy are expected to care a bit less about straight right correct sound, than we do. So they wouldn't listen fastened hemselves into the infamous critical listening (
) stereo triangle.
This kind of broad deviation is *not* addressed by the Olive rating specifically, as far as I can derive from the formula. In that the Olive rating--please check yourselves--falls behind the standards for German monitor speakers. The latter doesn't allow for broad-band deviations. +/-3dB or so are only acceptable if it is a narrow band deviation, some wiggle. The spec gives only a hint on it, instead of defining it mathematically, though.
What You do? Throw these little marvels into Your listening room. See what Your individual not-predicted-but really-measured in-room power response looks like, EQ it to Your liking ( "preference" it was, right? ). Please report! (You might want to explore the effect of a thick curtain, or carpet too.)
Tweeter stress? Changed tweeter, changed damping, changed XO, somebody wants the "woofer" being changed? I personally do not like the visual design.