Thanks for all your replies.
Are you using the equalizer and crossover built into the KC62?
I own a Lyngdorf TDAI-3400, KC62 is on LFE, I'm using 90hz on the Metas and 55hz on the sub, as adviced by the Kef engineer that answer me to a query once.
So I'm using the active correction of the Lyngdorf called RoomPerfect, the room is a square of 4,5x4,5 meters (that's an issue), it's half treated and the measurements with UMIK I made in the past showed a pretty decent result.
About positioning, the Lyngdorf wants the loudspeaker more close possibile to the wall but in the end I have them at 35 cm from it.
LS50 Meta are an incredible value speaker if you stay within their SPL limits
My room is mid to small, and I live in an aparment with neighboors, so my volume is never very high.
What do you find lacking in your current set up?
Everything is fine from the bottom to the highs, the match with the KC62 seem work perfect, even the most lowest LF is very good and never distorted or wrong. Mids (to me) are excellent and highs (to me) are excellent too, without any fatigue.
The issue is the mid-bass area, where the woofer thump, in the electronic, hip-hop, rnb and similar music, there is fatiguing.
There is not EQ, correction, and everything that fix that issue. When I listen to that kind of music I even prefer to bypass the active correction, in fact, with the active correction that issue is even more.
With any other kind of music, instead, the active correction is better, but even without it, the result are excellent.
About movies, action movies, the results are very good, not issue at all.
Said that, I'm curious to check if an upgrade of the loudspeakers could solve that issue, but, in the same time, I'm afraid to lose something about the Kef.
That's why I open this thread, I want to understand how much to spend if I want to keep Kef advantages and improve the mid-bass area.
I have not experience at all of higher values speakers in my room, but, i'm also happy to hear from you that my actual setup is good.