400 sqft room

[dieselb0y]

Hello all ... hope you're feeling good

Is a 400 sqft room with 8ft ceilling fit in the category of small or large rooms ?

I read a lot of thing about acoustic treatment for small room like bedroom but not a lot of information about room bigger than 250-350 sqft....

Basically, is a 200 sqft and 400 sqft room relatively needs the same acoustic treatment (bass trap , broadband bass trap , etc.. ) ??

Maybe one of the two room need less low bass trap than the other ?

The room is use for guit,bass,drum,vocal recording

Thanks all..... your're help is very appreciate

[Jens Eklund]

37 m² is medium size I would say, and if the dimensions are good it will be a great room if treated correctly. How much treatment you need depends on how picky you want to be and in the base region, it depends on the wall construction. If very lossy walls for instance (and if you don’t have the need for sound isolation), you might not need to much treatment since the walls will act as panel absorbers or simply let the bass frequencies pass through. If solid walls however, you need lots (as usual).

[dieselb0y]

Thanks a lot for the answer....

My english is not perfect... so I need to ask you what "lossy walls" mean?

My walls and celling are in presswod, behind that I think its normal Mineral wool for insulation .Floor is in floating wood.

We can call that lossy ? or.... ?

thanks for the answer



37 m² is medium size I would say, and if the dimensions are good it will be a great room if treated correctly. How much treatment you need depends on how picky you want to be and in the base region, it depends on the wall construction. If very lossy walls for instance (and if you don’t have the need for sound isolation), you might not need to much treatment since the walls will act as panel absorbers or simply let the bass frequencies pass through. If solid walls however, you need lots (as usual).

[Jens Eklund]

By ”lossy” I refer to walls that can vibrate, unlike solid ones (but all walls do vibrate more or less), and thus either pass some low frequencies or absorb them due to panel action. Your walls should behave like this at some frequencies.

[dieselb0y]

I understand now .... cool... thanks

Sooo it's can be a good thing in a certain way...

For the celling, can It be a good idea to put some rockwool fibres behind the preswood instead of bulding bass trap and hang it on the celling?

[Jens Eklund]

Originally Posted by dieselb0y

For the celling, can It be a good idea to put some rockwool fibres behind the preswood instead of bulding bass trap and hang it on the celling?

If there’s nothing behind the press wood but an air gap, then yes (but perhaps not instead of); put some wool behind it, touching the wood, otherwise you might experience a giant timpani as your ceiling!

[dieselb0y]

My celling has already normal wool insulation ... so at some place I can put rockwool touching the wood and put my wool insulation on the rockwool..... is that right?

[Jens Eklund]

Originally Posted by dieselb0y

My celling has already normal wool insulation ... so at some place I can put rockwool touching the wood and put my wool insulation on the rockwool..... is that right?

You lost me completely. Describe your ceiling construction layer by layer starting with the layer closest to the floor.

[dieselb0y]

Sorry ....... it's my fault ..... forget the answer I wrote. ....

I was thinking about putting rockwool in my attic..... on the presswood who is between my recording room and my attic... totally crazy...... forget about it..... sorry...... this thing wouldn't work