I have recently done some DIY broadband absorbers (see this thread
) and thought I'd pop by and see if anyone have any suggestions on where to go next.
This is the room as it is today:
There are some limiting factors due to certain aspects of the room, such as the window, door and alcove. My ECM 8000 decided to die on me and I haven't gotten a replacement yet, so new measurements will have to wait, but I do have some older measurements
from before I finished installing what you see above, IIRC it was without the cloud and the rear wall panels.
The peak around 130Hz is still quite audible, and the nulls from around 145-1609 obviously aren't
My thoughts are make 4 more 4" panels and place two in the wall/ceil corneres above the side 2" panels, and the other two to stack to fill the front corners.