Is it just me, or does it look like the polarity of the mid-range might have been reversed on the test speakers? Those notches could also be from a mic that wasn't aligned properly- the link shows a much better response.
http://fluance.com/product/XL7F_High_Performance_Three_way_Floorstanding_Loudspeakers.eng-7.html
The review shows "Chart A: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)"
I recently looked at a lot of integrated amps because I wanted a dedicated 2 channel system that does MM/MC cartridges with a bit more power, enough inputs, Low Pass out (if High Pass was included, even better) and pre out/power amp in. What I found is that most mainstream manufacturers still aren't up to speed with what used to be common offerings from almost everyone, although I am well aware that this type of equipment isn't nearly as popular as AV receivers. I think the real reason for this not taking off is the fact that it's far easier to say that an AVR sounds just as good and has a lot more features, then quote the power output by adding all of the channels together. The features are there but sometimes, the performance isn't what they say.
The linked trace is from the manufacturer and the scale is compressed by a facotr of two.
I think it is pretty clear that speaker has trouble where the ear is very sensitive.
I think that speaker will sound bad. Don't trust most subjective reviews, especially not from owners and subjective reviews in the press are next to useless.
I personally would stay well wide of that speaker.
One line that intrigued me was the Sony ES- I worked for a large Sony dealer that carried ES and I still have one, but it's 30 years old and doesn't have the power or some of the other features I wanted. The sound is excellent- smooth, wide response, low distortion and all of the Sony integrated amps I owned exceeded their specs by a wide margin when tested by several magazines and reviewers.