@psgcdn: I forgot to mention that there is no chance for me to listen to the speakers prior to buying them.
I remember reading such a test for the Tannoy Mercury V1 - I'll check again. Although I'm not qualified to interprete the such tests, I hope the explanation will be common sense enough. I will post the link to the test page, maybe you can give me some additional clues.
Unfortunatelly i didn't find such tests being performed on Q-Acoustics 2020i.
True, although in such a small room and with neighbours around I will never turn the volume too loud - more like, as i said, at low/medium levels. I know that loudness is a subjective measurement of sound.
In the Tannoys 5.0 set up only the centre speaker is 90 db. Of course I would have preferred the fronts/surrounds to be higher than 86 db.
I could choose among other speakers (matter of fact I've already returned a 5.0 MA Bronze and then a 5.0 Heco Victa Prime) but the choice is limited by the fact that I dont want the surrounds to be thick and also by money considerations.
Actually, regarding the recommended minimum amp. power, I was more interested in this: given the small room, my listening preferrences and the limited power of Yamaha RX-673, which one is more suited, the Tannoys (10 W minim recommended) or Q Acoustics (25 W minimum recommended amp)? Notice that, in my case, the speaker with smaller sensitivity is 10 W min, while the one with better sensitivity is 25 W minim.
I know the MA Bronze setup would have been better, but the minimum recommended amp power for those is 30 W. Also, they are the most expensive, and at first that was the reason for returning them (a change in the available money intervened)
@psgcdn: here's the page with Tannoy V1 measurements: http://www.stereophile.com/content/tannoy-mercury-v1-loudspeaker-measurements
By the way, should I be worried by that 'Fig. 3' problem they mention? In what more preciselly does that translate?