@Sancus is making the point that Sparky (Neil Gould) makes in his professional review, to which I referred ...
He has the Kii3 (with bass units) and these 420 in his studio and said the 420 are more immersive and need more room treatment, which is why I also made the observation that the Kii 3 are most likely to work better in typical homes with little or no treatment.
The root cause of the misunderstanding lies in the statement: "more directivity == less room interaction", which I read above again.
I do not, and I don't want to know who brought that up.
But it is wrong, plainly. Please take Your time to re-think it. You may be tempted to keep some pre-occupation to what people reiterate relentlessly. Withstand the easy greasy slope of accepted common wisdom (from people who do not measure, and have no specific education in the field the eagerly talk about, sorry).
First, the room-interaction may be different. In which way, then?
Only to connect to some already accepted 'concept' of room acoustics, I like to refer to the so called Schroeder frequency. It says there is a regime in which, due to
- bigger wavelength, the reflections are sparse, and hence 'discrete' and singled out in some way. The bass and lower midrange are affected, showing that nasty peaks and dips.
Above the Schroeder frequency one comes into the regime of
- smaller wavelengths with many discrete reflections, which, due to them being many, tend to equalise out one against the other
To begin with, the first take-away should be, that room interaction is unavoidable! Thing is to deal with it reasonably!
Again, below the Schroeder frequency one wants as much reflections, with differing phase when reaching the listener, as possible! Mantra: Do radiate as wide as possible!
Above the Schroeder frequency one may be fine with less reflections, but within some limits. Mute reflections too much, and the worse effects of sparse, singled out reflection chime in.
