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I recently purchased a 150 year old Victorian brick home with a huge unfinished attic, I plan on turning this into my man cave and the new home for my Soundlab Majestic electrostatic speakers, I am in the process of installing insulation now and will need to finish the walls with something, does anyone know what kind of wood they use inside recording studios?
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There are several methods to address keeping sound in a room and not bothering others in the house or neighbors. Insulation is not a very good hinderance in general. Sheetrock screws almost act like an interstate for low frequency sounds. Low frequencies cause the walls to vibrate and then someone starts yelling at you to "turn it down!" So adding mass to the wall is a good first step. Its sort of like pushing a grocery cart. It's much easier to push one that is empty than one that is loaded down with rocks. So adding mass to the walls, ceiling and floor is very helpful.
In order to treat the wall(s) in my house, I used sound isolation clips that are mounted to the studs, steel hat channel is mounted to the clips, one layer of sheetrock is mounted to the steel hat channel and a second layer of sheetrock is then added. Between the two layers a product called Green Glue is applied. Doing this adds mass to the wall and and decouples the sheet rock from the studs. The Green Glue traps the low frequency sound waves and converts them to heat and dissipates them. Lastly, an acoustical sealant is applied around the perimeter of the wall. That leaves the floor and the ceiling where a similar process can be undertaken. Something else that is popular is to build 2- 2x4 stud walls with a narrow air gap between them and where the studs, 16" on center, do not line up with each other. Insulation and sheet rock is applied to the inner wall and the process described above is applied to the outer wall. You can also do the same thing with the floor and ceiling. Basically, containing sound waves is as much science as art and is a very difficult thing to do. One other risk is that in going to such great lengths to contain sound one must be careful that the sound that is created is not degraded. A 50Hz signal is somewhere close to 22 feet long and it has to go somewhere. Depending on the level of containment you achieve, it might be wise to also plan for room treatments. You'd hate to solve one problem and create another.
Below is the web site for green glue and there is a wealth of information on the subject on the web:
http://www.greengluecompany.com
Good Luck!
I have just built a fully treated and dedicated room
Check this thread
Rodney Gold
I am a retired builder and I know this. Insulation itself does not stop sound but rather keeps sheetrock from vibrating. If you have sloping walls, that is a big help because it eliminates a lot of reflections. You could carper the walls...it depends what you want to achieve...even the floor. Do any needed wiring now..
... Lots of insulation in the wall cavities. Line the walls with acoustic drywall (it is denser)
But don't go over board with walls if you ignore the floor & ceiling, especially the floor.
Smile
Sox
May or may not help, but interesting....check out this link.
Edits: 04/15/15 04/15/15
Don't make it too dead, think dispersive.
The ceiling of Sun studio is a series of W shaped sections
"1 square foot asbestos panels with little holes in them"I don't think so, if they are made from "asbestos", you are a dead man!
Do you mean 12" acoustic tiles?
Edits: 04/18/15
Original Asbestos ceiling
Edits: 04/15/15
Very cool project- whenever you get started, please post pics!
I n addition to the link posted below(in this post) I have seen a room where the wall was prepared as follows:
Stud wall w/ Fiberglass insulation between the studs - then horizontal furring strips 1"x 4" run from just above the floor to the ceiling every 24", then a black fabric stretched over the furring and then vertical boards 1" wide and alternating depths - spaced on 2-3" centers - creates an irregular surface / LF absorption through the fabric...
Happy Listening
There is some interesting reading here: http://www.mother-of-tone.com/lacquer.htm
about lacquer and wood in the listening room. Not a complete solution, but perhaps, part of it.
Good Luck!
I don't know that fabric-covered walls would be particularly good for sound reproduction. A few live rooms are done that way, but the needs of recording sound are very different from reproducing sound. It's fairly easy to dampen an overly live room, but livening up a dead room can be expensive.
Design your room so no room dimension is a multiple of any other dimension. Non-parallel walls are good (and attics are often good at providing them.)
Most dipoles love to shoot into long, relatively narrow rooms, and attics are often good for this as well. Having a live end opposite a dead end can be very effective. Most people set the dead end behind the speakers, but I've heard the opposite sound very good as well.
WW
"A man need merely light the filaments of his receiving set and the world's greatest artists will perform for him." Alfred N. Goldsmith, RCA, 1922
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