[EduardoApolonia]

I didn't try with the rockwool closer to the mic in front of the racks, because there was something that changed in the meantime that really did a big difference.
I have 2 pairs of Adam monitors that were lent to me to try: S3X-H and S4X-H.
The last measurements I did were with the S4s, but since they're heavy for me to move around by myself, a friend of mine helped me and I replaced one of the S4s for an S3.


Now the good news:
At this point was when I started to see the the light at the end of the tunnel!!!!

When I started the measurements it caught my attention that there was a big difference on the right side where I replaced the S4 for the S3.
The difference couldn't be just the monitor, so I saw that the front of the S3 was a little more to the back, since the monitor is less deep than the S4 it was pushed to the back as possible, but more importantly the S3 was lower than the S4 and that made a lot of difference.

So I measured varying the height of the monitor and that gave a lot of different results.


Orange line - Base of the monitor 89cm
Red line - Base of the monitor 106cm
Green line - Base of the monitor 123cm
Blue line - Base of the monitor 140cm




Pic of monitor inside the basstrap at 89cm (base) (Orange Line)




Pic of monitor inside the basstrap at 140cm (base) (Blue Line)





Then I did the same height variation but with the monitor outside the basstrap and went a little higher:


Orange Line - Base of the monitor 89cm
Red line - Base of the monitor 106cm
Green line - Base of the monitor 123cm
Blue line - Base of the monitor 140cm
Black line - Base of the monitor 157cm




Pic of monitor outside the basstrap at 89cm (base) (Orange Line)




Pic of monitor outside the basstrap at 157cm (base) (Black Line)





Then with the monitor outside the basstrap and at this height I varied the distance of the monitor to the Listening position.

Black line - Just outside the Basstrap
Red line - 15cm closer to the Listening position
Orange line - 30 cm closer to the listening position.





I think that all this info is starting to show that SBIR is the biggest problem, caused mainly by the distance from the ceiling/floor then adding the distances from front and side walls.

More to come...