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DIY Home/Studio Acoustic Treatment Tutorials

Customising, building or repairing your own gear? Need help with acoustic treatment or soundproofing? Ask away…

Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Thu Nov 15, 2018 4:45 pm

Studio Support Gnome wrote:
malhomme wrote:I'd like to sort of jump on the thread to ask for a little enlighment.
I mean, I am into the process of constructing my studio out of an old (small) staple (staples ?).
Anyway.
These DIY stuff are exactly what I need nad I try to find as much as I can to help design my future "homeplace" as I'd like it to be.
Although there tons of question, I'd like to know two things

1) How choose the fabric to cover the whole trap ? These explanations don't tell that much Sometimes it is said that it must be acoustically neutral. How can one know ?

1) if you can easily breathe through it when stretched tight across your mouth... it's a fair bet.... the most commonly used in the UK and Europe is probably Interface fabrics "Cara".

Max

I was thinking of burlap (sack cloth).... broad fibres and cheap as chips, literally... it's used for potato sacks. Doesn't a coat of dilute PVA affect the frequency absorption?
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Sam Spoons » Thu Nov 15, 2018 4:49 pm

Cara is slightly stretchy which makes it much easier to do a neat job covering the panels. It is more expensive but I'm glad I didn't try to do it on the cheap as the finished job looks great.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Thu Nov 15, 2018 4:54 pm

...actually, it depends where you look anyway. Burlap's considered a 'craft' material now, so you can get ripped right off! Cheers.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Wonks » Thu Nov 15, 2018 4:56 pm

Elephone wrote:Doesn't a coat of dilute PVA affect the frequency absorption?

It is a dilute mist coat, just enough to hold the external fibres in place, whilst not enough to close up any pores in the material.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Thu Nov 15, 2018 5:14 pm

Wonks wrote:
Elephone wrote:Doesn't a coat of dilute PVA affect the frequency absorption?

It is a dilute mist coat, just enough to hold the external fibres in place, whilst not enough to close up any pores in the material.

I might just do that for now then until I get some fabric offered. The fabric to cover them will cost far more than the nine 120 x 60 panels, and I need to buy plasterboard to block a door. Fabric seems to cost more than when people made it by hand.

Maybe net curtain material.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Hugh Robjohns » Thu Nov 15, 2018 7:23 pm

We've used black plastic weed-surpression material for a couple of Studio SOS jobs. It's a bit utilitarian, but dirt cheap (see what I did there?) , readily available in local garden stores, easy to use, and with enough stretch to make a tidy job.

H
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Fri Nov 16, 2018 3:37 pm

Thanks! Does some rockwool come in hard lightweight foam slabs? I saw some on a skip and wondered if that's rockwool or some other heating insulation material.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Hugh Robjohns » Fri Nov 16, 2018 4:21 pm

Elephone wrote:Does some rockwool come in hard lightweight foam slabs? I saw some on a skip and wondered if that's rockwool or some other heating insulation material.

No. Rockwool looks more like Weetabix! It's a fibrous material. What you're describing sounds like a closed-cell foam slab used for heat insulation in cavity walls... which is of no use acoustically.

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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby James Perrett » Sat Nov 17, 2018 12:32 am

If you want some cheap fabric try decorators' dust sheets. They don't look as neat as Cara but seem to work OK.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Sam Spoons » Sat Nov 17, 2018 9:44 am

I used dust sheets on the back if my panels and it works pretty well. As James says it doesn't look as nice as Cara though and it is not quite as easy to use for some reason.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Sun Nov 18, 2018 6:26 pm

Anyone tried using plus-sized ladies tights to keep the fibres from straying? Just an idea.
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Sun Nov 18, 2018 8:29 pm

Sam Spoons wrote:I used dust sheets on the back if my panels and it works pretty well. As James says it doesn't look as nice as Cara though and it is not quite as easy to use for some reason.

I presume you mean cotton fibre dust sheets? But there's cotton twill, cotton calico, cotton canvas, laminated cotton, rayon, and Bolton twill.

https://www.ebay.co.uk/itm/Cotton-Dust- ... 1195033497?
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby James Perrett » Sun Nov 18, 2018 9:08 pm

I used the cotton twill dust sheets as that's what they sold in Screwfix. Nowadays I'd go to Toolstation who are usually cheaper for most things (their dust sheets are roughly the same price as that Ebay listing which is £3 cheaper than Screwfix).
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Sam Spoons » Sun Nov 18, 2018 9:34 pm

Elephone wrote:
Sam Spoons wrote:I used dust sheets on the back if my panels and it works pretty well. As James says it doesn't look as nice as Cara though and it is not quite as easy to use for some reason.

I presume you mean cotton fibre dust sheets? But there's cotton twill, cotton calico, cotton canvas, laminated cotton, rayon, and Bolton twill.

https://www.ebay.co.uk/itm/Cotton-Dust- ... 1195033497?

I used these https://www.diy.com/departments/diall-cotton-dust-sheet-l-3-67m-w-2-74-m/1650661_BQ.prd?utm_source=google_cpc&utm_medium=shopping&utm_campaign=PX_GSC_Surfaces_+_Generic&ppc_type=shopping&ds_kids=92700029904929509&gclid=EAIaIQobChMI-sjPjuXe3gIVQ7DtCh0MtQK0EAQYASABEgLsJvD_BwE&gclsrc=aw.ds
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Mon Nov 19, 2018 4:43 pm

Thanks. I do think nylon tights might be a good underlay as an extra precaution to prevent fibres straying (as well PVA spray), especially if the panels are in your living space, above a couch or bed.

Incidentally, to apply the PVA, should I water it down to about 1 part PVA to 5 parts water and put it in a spray bottle?

Thanks
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Mixedup » Tue Nov 20, 2018 4:39 pm

Upholsterers bottoming fabric also works well enough. Ditto hessian/burlap, which can be cheap if bought in bulk on a roll.

Though with lots of these 'alternatives' to commercial acoustic cloth, you might want to check the credentials for fire safety...
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Mon Nov 26, 2018 10:47 pm

Sorry to be totally useless... but does it have to be PVA glue to bond the fibres? I don't want to balls it up by getting the wrong consistency. Won't an aerosol carpet spray glue do the trick? Otherwise, how do I mix PVA with water? Does it need meths or alcohol to be added?

Thanks
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Sam Spoons » Mon Nov 26, 2018 10:56 pm

PVA is water based, just dilute with water. The dilution will depend on which PVA you buy, the correct ratio is usually on the container (it’s not super critical though).
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Elephone » Tue Jan 22, 2019 3:56 pm

Sam Spoons wrote:PVA is water based, just dilute with water. The dilution will depend on which PVA you buy, the correct ratio is usually on the container (it’s not super critical though).

Just wondering... in hindsight... wouldn't hairspray have been better than diluted PVA to bind the stray fibres?
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Re: DIY Home/Studio Acoustic Treatment Tutorials

Postby Martin Walker » Tue Jan 22, 2019 4:41 pm

Elephone wrote:
Sam Spoons wrote:PVA is water based, just dilute with water. The dilution will depend on which PVA you buy, the correct ratio is usually on the container (it’s not super critical though).

Just wondering... in hindsight... wouldn't hairspray have been better than diluted PVA to bind the stray fibres?

I hope you jest Elephone - can't think of a more flammable solution :o :shock:

Diluted PVA worked wonders on my traps :thumbup:


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