Making Acoustic Hangers

cfuehrer · Post by **cfuehrer** » Mon Jan 19, 2004 1:33 pm

What way did any of you make your acoustic hangers for the back of the control rooms and under your soffit speakers?

cfuehrer · Post by **cfuehrer** » Tue Jan 20, 2004 11:57 am

Anyone?

Post by **John Sayers** » Tue Jan 20, 2004 12:10 pm

Carl - the cleanest and easiest way is to use Dacron - polyester - the stuff upholsters pad out chairs with. Then wrap it around lengths of Soft Fibreboard. (celotex)

Then hang them off a couple of 2" x 1" rails nailed to the top of the cavity using either wire or string with holes punched in the celotex.

this is how they look when hung in a ceiling cavity.

cheers
john

cfuehrer · Post by **cfuehrer** » Tue Jan 20, 2004 1:34 pm

Thanks John! Are these what will be in the back corners of the control room and under the speaker soffits? Any in the ceilings?

Would Homasote board work inplace of the celotex?

Post by **John Sayers** » Wed Jan 21, 2004 8:42 am

Are these what will be in the back corners of the control room and under the speaker soffits?

Yup - that's them.

I'm not familiar with homasote - could someone give Carl the US equivalent to soft fibreboard using US terms

cheers
john

cfuehrer · Post by **cfuehrer** » Wed Jan 21, 2004 9:30 am

http://www.homasote.com/ It's a fiberboard for acoustic and building applications.

ollie · Post by **ollie** » Wed Jan 21, 2004 12:40 pm

My recipe:

3/8" OSB plywood (cheap) cut into various sizes (and shapes) to fit into the space you intend to bass trap. Cover the sound incident side with 1" 703, drill holes in them and hang them with "shock cord" ie the cord that bungie cords are made of.

Angle them when you hang them if you have the room. ie if you have a triangular space in the ceiling consider hanging 2-3 bass hangers paralel to the angle rather that 5-6 smaller ones perpendicular to the ceiling.

If you got extra money cover both sides of the OSB with 1" 703.

Works great and has quite a bit of mass which is what its all about...

I'm gonna see if I have a picture of these somewhere... wish it was easier to post images on this board.

cheers,
ollie

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nukmusic · Post by **nukmusic** » Wed Jan 21, 2004 1:15 pm

man..............and I though they were just 703 wrapped with polyester

Good thing i come here often.

knightfly · Post by **knightfly** » Wed Jan 21, 2004 1:31 pm

Ollie - "wish it was easier to post images on this board" -

How are you going about it? This is about the easiest board I've seen to post pix on... Steve

ollie · Post by **ollie** » Thu Jan 22, 2004 2:11 am

nukmusic wrote:man..............and I though they were just 703 wrapped with polyester Good thing i come here often.

That works too but if you do that they are harder to hang... unless you harden the edges of the 703 with resin... but thats a different topic altogether.

I have seen them done many ways, 703 on celotex, 703 on OSB, Dacron on celotex, "wool/cotton infill batting" (which is what Dacron replaced)... on drywall, roxul on osb etc...

Whatever you can do cheapest...

cheers,
o

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John Sayers' Recording Studio Design Forum Archive

Making Acoustic Hangers

Making Acoustic Hangers

Bass hangers

That works too!