I’ve had these foam sound blocks sitting around forever. I never hung them because it would have left several holes in the wall after removing them for cleaning a few times. So I finally had the idea to mount them on removable frames. It was a self-proclaimed moment of brilliance because not only does the foam work to tame the high frequencies, an air-pocket is created that is good for trapping bass frequencies.
I A/B’d them by putting up just the right side. Huge difference. After getting both up, I discovered that the bass was being swallowed, which is the exact opposite I expected. Bass is super clear and I can easily hear adjustments on the lower end.
