Hi again,
first, let me thank everyone who are writing in my thread for all the advices.
Just some clarifications:
1) I read from someone that the treatment of the room painted in the sketch does not correspond to the real treatment. I don't know why you said that, but it is as in the sketch, mostly of the acoustic panels are from an italian company named "Oudimmo", very good quality;
2) I read above that, since my subs aren't stick to the wall, the distance must be entry from the front wall and not from the back of the subs. That is a false information, because the distance is always from the back of the subs and not from the front wall;
3) some months ago, I tried to remove most of the treatment (in particolar what's is behind the speakers), the little furnitures at the sides of the TV, and stick the Metas on the wall, and stick also one only KC62 to the wall (at time I didn't have the second); I don't cleary remember if I had some benefits with RoomPerfect in such way, but, I cleary remember that I totally dislike the image of the loudspeakers, then I put everything back as now and I found again the beautiful, vivid, rich, 3D imagine that I have now; This doesn't mean that I won't try your advice to remove everything and stick everything to the wall again;
Something to remind:
1) the room is sadly a square 4,5x4,5x2,9
2) the system is Lyngorf TDAI-3400+KEF LS50 Meta+Stand S2 filled+Dual KEF KC62
3) the Metas are 2,70 meters apart, 33cm from the front wall, 100cm from each side
4) I listen at 3,00 meters from them and behind my head I have 1,30 meters
This is the actual furniture disposition:
View attachment 1720714
This is a photo of the front wall:
View attachment 1720699
I'm attacking some REW measurements, "b" means "Bypass/no correction", "g" means "Global/RoomPerfect", "my" means "Bypass/no correction/my own EQ".
It's Left+Right+Sub.
I'm now working with Metas at 100hz LR 4th and KC62's at 100hz LR 4th -12dB, 1/4 of the volume on the sub, LFE.
Said everything above, I remember to you that what RoomPerfect does is a virtual "LOUDNESS" button on the sound.
RoomPerfect, instead of make the bass more "slim", "slighter", "faster", "effortless", it gives weight to the sound. At first, I try to acclimate my ear to it, and, on acoustic or good recording music, RoomPerfect sounds very good... but after I back to BYPASS, immedialely my ears start to breath, the sound become "faster", the midbass hump/boomy is reduced, etc.
Just a note, the correction of RoomPerfect seen on the "STATUS" on the settings, is 9%. And I always had these values, from 7% to max 14% (mostly I have from 7% to 9%, Global or Focus no matters).
My actual setup sounds awesome on every single detail of the sound frequencies, from the most lower end to the sparkle highs (always effortless, no matter the quality of the recordings), but my only complain are the
mid-lows hump, that I find fatiguing.
Classic music, real-life instruments (guitars, pianos, cellos, etc.) sound perfect in BYPASS and even more with Focus or Global but when we have a song with some punch, I have the issue, that only issue. And in those scenarios is always better BYPASS.