You are absolutely right, it shows that the subwoofer is not there, but my intention with the videos is to look at the acoustics of the room and the truth is that apart from entertaining me it helps me.
All my friends who like this hobby, we all started in a more orthodox way, now we have followed the totally opposite path.
I am the least advanced but I do have my treatment done by my + customizable powerful manual equalization.
We have very thick absorbent panels and we use Knauf and Dacron wool (wadding in Spain).
Personally, my absorbent panels are filled with Dacron and are between 30 and 45 cm thick, making the most of the maximum speed to locate the panels.
I leave 2 simulations where you can see a panel of 20 and 40 cm thick with Knauf and Dacron wool where there are 4 simulations depending on the resistivity to the passage of the air flow.
Nice. Now what you've just shared here is IMO the effects. Can you share the cause too? For example. An overhead view of your room layout including dimensions and where items are placed? As well as briefly describe your components, speakers, subs? Not to mention elements you may have modified / installed to address the electrical and vibration mgmt sectors?
It's rather difficult to make heads or tails of any of this without a more thorough overview of the entire playback vineyard.