I have done some changes and removed the two Varitunes from the sides and put them above my TV.
For two days ago I have measured inside and outside on the left side V4 and V6 and only used the right speakers in full range.
ALL of the V4 is tuned at around 55Hz and the two V6 is tuned at around 30Hz.
V4, the red inside the HH and the green outside, around 10cm from the port hole;
V6, the red inside the HH and the green outside, around 10cm from the port hole;
Measured at the same day at Listeningposition;
I am suprized that nobody has guess what freq I have tuned those Varitunes resonators and by using various room mode calculator despite that I have provided the layout and pictures of the room. This only proves that there are lots of experts here in this forum that really lacks the understanding how to treat the first axiall modal resonances below 100Hz and the understanding about Helmholtz resonators and phase shift phenomena. Now you all know
I am waiting for 16pc of wing-diffusors to arrive and I will provide with more measaurements.