| fwiw
i tried 4" panels straddling the corners for a few years. yes, they helped but...
Placing absorption throughout the room and handling the > 100hz frequencies is pretty straight forward.
Handling the < 100Hz freqs takes some effort.
When I built some super chunks it took the room into a whole new league (very measurable) in the low end. I will never go back. It's very cheap and easy to do yourself (though the production units will probably look better). I can't imagine trying to do work without them.
ymmv, imho, fwiw, etc
have fun |