So I've started my home cinema project, read a ton of websites and have the basics planned.
What I don't know yet, and the Internet is full of conflicting opinions, is what the best material for sound absorption is?
The front will be covered with fabric. Inside the frame I want to put my sound absorbers. Obviously, accoustic foam or special absorbers would be best, but I have a fairly large room and a limited budget. I would rather line the walls and ceiling with something that's 80% good and reserve some budget for putting professional absorbers in one or two key spots.
So, on a budget, and a depth of about 5 cm (2 inches), which is the best choice for material to put there?
It's a basement room, so the walls by themselves are already thick and isolated and I'm not worried about the neighbours, I only care about the accoustics inside the room.
The 5cm depth of the frame is an arbitrary choice, if I get significantly better sound by going to 8 cm (the next depth I can get wood for easily) then that's an option. More is not as my screen is already installed and has about 10 cm space on each side.
I also plan to run the wires through/behind those frames, and put the front and rear speakers partially inside.