I made some DIY clones of these pillows many years ago. Sonic impact was (very) minimal.
I had great success with building my own floor-to ceiling SEALED bass traps to remedy a mid-bass hump in my room and also 24" X 48" panels to dampen the first reflection points on side walls. All made of 2" thick Owens Corning RIGID fiberglass panels with inexpensive wood frames and covered with theĀ fabric of my choice. Sonic impact was not just, "Well, I guess they make some difference." like the RoomTunes.
Best to you jaybe,
Dave
I had great success with building my own floor-to ceiling SEALED bass traps to remedy a mid-bass hump in my room and also 24" X 48" panels to dampen the first reflection points on side walls. All made of 2" thick Owens Corning RIGID fiberglass panels with inexpensive wood frames and covered with theĀ fabric of my choice. Sonic impact was not just, "Well, I guess they make some difference." like the RoomTunes.
Best to you jaybe,
Dave