DIY Bass traps

[stevetgn]

I may have some mixing work to do soon in a horrible small room and will need to construct some DIY bass traps before I start or I know my work will end up sounding poor.
Will the really compact rock wool, the type that is almost solid and not "wooly" do the job? Say a couple of slabs in a make-shift frame of some sorts?

All comments welcome
Thanks in advance

Steve

[Mark1353]

Buy glass fiber or rockwool and leave them inside the packages. Then pile the packages on top of each other at the corners. I read this tip from somewhere a long time ago...

[stevetgn]

Originally Posted by Mark1353

Buy glass fiber or rockwool and leave them inside the packages. Then pile the packages on top of each other at the corners. I read this tip from somewhere a long time ago...

That was my first though but the room is silly small and all the corners etc have gear in them, racks, keyboard stands etc. So I was thinking of making a make shift frame that could be wall mounted.

[Ethan Winer]

Originally Posted by stevetgn

Will the really compact rock wool, the type that is almost solid and not "wooly" do the job?

Thanks for moving this to the public forum Steve. To me PMs are for private stuff, rather than free consultancy.

I'm not familiar with anything extremely rigid as you describe. If it doesn't give at all, then it's probably not the right stuff. You want material with a density between 3 and 12 pounds per cubic foot.

--Ethan

[Glenn Kuras]

Originally Posted by Ethan Winer

Thanks for moving this to the public forum Steve. To me PMs are for private stuff, rather than free consultancy.

I'm not familiar with anything extremely rigid as you describe. If it doesn't give at all, then it's probably not the right stuff. You want material with a density between 3 and 12 pounds per cubic foot.

--Ethan

It almost sounds like he is talking about 8 pound mineral wool, which will work very well. So yes frame it up and straddle the corners of your room.

Glenn

[stevetgn]

Originally Posted by Ethan Winer

Thanks for moving this to the public forum Steve. To me PMs are for private stuff, rather than free consultancy.

I'm not familiar with anything extremely rigid as you describe. If it doesn't give at all, then it's probably not the right stuff. You want material with a density between 3 and 12 pounds per cubic foot.

--Ethan

Cheers Ethan.

Most DIY centres here in the UK sell these slabs I mentioned. Its definitely rock wool but just much more compact than the rolled stuff. I think its used in stud walling etc for insulation and sound proofing. I was just wondering if it would absorb bass well enough in a frame on a wall.

[Glenn Kuras]

Originally Posted by stevetgn

Cheers Ethan.

Most DIY centres here in the UK sell these slabs I mentioned. Its definitely rock wool but just much more compact than the rolled stuff. I think its used in stud walling etc for insulation and sound proofing. I was just wondering if it would absorb bass well enough in a frame on a wall.

Do they have a weight on it? I bet that is something like 3 to 8 pound mineral wool. Used all the time for bass trapping.

Glenn

[mds]

Originally Posted by Mark1353

Buy glass fiber or rockwool and leave them inside the packages. Then pile the packages on top of each other at the corners. I read this tip from somewhere a long time ago...

Wouldn't the plastic packaging reflect a lot of sound rather than let it go into the fiber/rockwool?

[Mark1353]

It would reflect the high end, not the low end.. but so would the wall behind it too. And probably those gaps between each package would act as a bad diffusor.

[stevetgn]

Originally Posted by Glenn Kuras

Do they have a weight on it? I bet that is something like 3 to 8 pound mineral wool. Used all the time for bass trapping.

Glenn

I'll check. Thanks for your input Glenn. Appreciated.

[Glenn Kuras]

Originally Posted by Mark1353

It would reflect the high end, not the low end.. but so would the wall behind it too. And probably those gaps between each package would act as a bad diffusor.

Yes and no. Yes the plastic will reflect some of the highs but not the lows, but the gaps will not as any kind of diffusion. Would be cool if it did though.

Glenn