I'm renovating an apartment and I'm planning to use a small room for home theater:
This is how I'm planning to use it (the wall on the photo above is the south wall on the scheme below):
I'm gonna add sound proofing in order to be able to watch loud movies without annoying my neighbors. It's gonna be a 9 cm thick cocoon which is not touching the walls.
The purpose of the room is a home theater for movies and parties.
In addition to sound proofing, I would like to add sound treatment to minimize echoes, reflections, standing waves, etc.
I do realize that the room is too small, making perfect sound setup impossible. The fact that the couch is not in the middle of the room — also contributes to the problem.
My goal with this question is to find measures minimizing the flaws of the room and its arrangement.
The screen wall is 3 meters wide, from corner to door. The side wall (south wall on the scheme) is 3.5 meters wide.
The ceiling is 2.8 meters tall.
The inner layer of the sound proofing cocoon is drywall.
Initially I wanted a 7.1.4 setup with a floor-standing primary stereo pair.
- I've discovered that a 7.1 setup in such a tiny room results in a tiny, single-person sweet spot in the middle of the room. Also, 12-channel receivers cost a fortune. Thus, I've decided to scale it down to 5.1.2.
- Tall floor-standing speaker require placing them on the sides of the projector screen (120" 16:9). As a result, one of the speakers would end up in the corner. I assume that's undesirable. To move the speaker away from the side wall, I'll have to switch to large bookshelf speakers positioned under the screen.
The only audio component I've purchased already is a subwoofer. It's Mission MS-800, 12", quite powerful, closed box design, front-facing driver.
Measures I could think of:
- Do not position primary stereo speakers into the corner.
- Use a very thick curtain to cover the window, shown with green wavy line on the scheme.
- Cover the whole side (south) wall with sound treatment, shown with green zigzag line on the scheme. Note that using small patches of treatment in strategic spots is not an option because I'm trying to solve it for a party of movie watchers, not for a single person sitting in a predefined spot.
- What mistakes have I made and how do I fix them? Changing the arrangement of the room is not an option, it's settled.
- Should I use absorber or diffuser treatment to cover the side (south) wall? What is the difference?
- Which cheap material should I use? I've read that styrofoam is fraud. Is that true? I guess I could save a fortune by going with a handmade "pixel" diffuser made by cutting wooden beams. Is it the way to go?
- Should I add bass absorbers to both corners of the side (south) wall?
- What other measures can I take?
- Where should I position the subwoofer?