@hilde45
Here is a link data/graph of 4" OC703. Note random incidence vs normal incidence. This is just FYI, since it came up incidentally (pun intended).
https://www.gearslutz.com/board/attachments/studio-building-acoustics/502621d1444038910-low-end-resp...
https://www.gearslutz.com/board/attachments/studio-building-acoustics/502620d1444038344-low-end-resp...
Here is a link data/graph of 4" OC703. Note random incidence vs normal incidence. This is just FYI, since it came up incidentally (pun intended).
https://www.gearslutz.com/board/attachments/studio-building-acoustics/502621d1444038910-low-end-resp...
https://www.gearslutz.com/board/attachments/studio-building-acoustics/502620d1444038344-low-end-resp...