Acoustic products in Europe

[archive]

From: GonÁalo Coelho <goncalo_coelho@x????xxx.xxxx
Date: Tue Nov 2, 1999 11:40 pm
Subject: Acoustic products in Europe

Hi;

I live in Portugal, Europe and I¥ve been studying acoustic treatment on my
own for the last 4/6 months and I¥m having lots of trouble finding certain,
if not all the products that I¥m looking for, mainly because nobody here
cares about acoustics. It¥s true!

Having searched in the Net I¥ve found lots of acoustics sites but all of
them where in the USA.
Does anyone knows of anybody selling acoustic products in Europe with a site
on the Internet where you can buy things online or similar?

Thanks

GonÁalo Coelho

[archive]

From: Dan Nelson <dprimary@x??????xxxxx.xxxx
Date: Wed Nov 3, 1999 12:27 am
Subject: Re: Acoustic products in Europe

Here is two for RPG http://www.rpginc.com they make diffusor and some
absorption products

Portugal

Audio Pro
audiopro@m...
351 1 712 2010 phone
351 1 712 2019 fax

Portugal

Absorsor, Lda
Luis Santos Conde
absorsor@m...
351 1 421 4525 phone
351 1 421 3555 fax

[archive]

From: SRF7@x??x.xxx
Date: Wed Nov 3, 1999 3:00 am
Subject: Re: Acoustic products in Europe

In a message dated 11/2/99 6:51:33 PM Eastern Standard Time,
goncalo_coelho@h... writes:

<< Having searched in the Net I¥ve found lots of acoustics sites but all of
them where in the USA.
Does anyone knows of anybody selling acoustic products in Europe with a site
on the Internet where you can buy things online or similar?

Thanks

GonÁalo Coelho >>

Screw 'em, make your own.. you don't need 703.. buy quilt batting and
burlap... build your diffusion array... its all pretty straight forward
stuff. Figuring out what your needs is the hard part.

Good luck

Scott R. Foster

[archive]

From: GonÁalo Coelho <goncalo_coelho@x????xxx.xxxx
Date: Wed Nov 3, 1999 2:44 pm
Subject: Re: Acoustic products in Europe

Thanks for the contacts Dan.

I already knew Audio Pro. Their only acoustic products are from RPG but
their kinda expensive for my budget. Absorsor is new but havent talked to
them yet.

What I was really looking for was places were I can buy the raw materials so
I can make my own diffusors, absorbers or even bass traps. But theres were
the hard part comes! Most of the materials talked about in do-it-yourself
acoustic projects are very specific to their own countries and thats were my
problems start. Most of the times I can't explain what I want because I
don't really know what it stands for in portuguese.

Maybe I havent looked hard enough but until now I¥ve only found products
from Rockwool, Isover ,Glasco and also from a Spanish manufacturer named
Silanto who happens to have a portuguese distributor. These brands make some
acoustic products based on rock and glass composites but only Silanto has a
panel based on fiberglass. No signs of Owens Corning 7xx panels over this
side of the planet!

I¥m also having a hard time finding the right fabrics to cover my "to be
made" panels since I¥ve read that most of them reflect alot of frequencies.

Scott,
I guess this also answers your reply. Although I already know what my need
are, finding the stuff to do it as you can see is what is being dificult.

Thanks for help guys!

GonÁalo Coelho

[archive]

From: SRF7@x??x.xxx
Date: Wed Nov 3, 1999 4:47 pm
Subject: Re: Re: Acoustic products in Europe

In a message dated 11/3/99 9:48:43 AM Eastern Standard Time,
goncalo_coelho@h... writes:

> I guess this also answers your reply. Although I already know what my need
> are, finding the stuff to do it as you can see is what is being dificult.

Okie dokie... what are your needs? I assume that broadband absorption is
one, given that you mention 703 panels. 703 is a stiff board material made
of spun fiberglass with a density of 3 lbs. per cubic foot. It works well at
broadband absorption because of its shape and density... that is to say the
it has lots of small interstices (crevices and voids) that trap sound waves,
and it has subtle willingness to allow individual fibers to vibrate, thereby
turning sound into heat.

There is nothing magic about 703... a similar density board made of spun
oatmeal, or plastic, or stringy dried camel dung, having a similar pattern of
interstices, and flexibility would perform similarly for your acoustic
purposes. The batting (fluffy cloth material) used in thick blankets can be
stuffed in a bag to a similar density (like a giant pillow) and provide
similar results. It may take a bit of trial and error to determine the
volumes needed but that really isn't a big problem.... Make some panels, hang
them in the room, observe the results, and add more (or less) accordingly.

As to fabric coverings, anything that will be acoustically transparent (an
open weave) will work.. burlap is cheap and can be dyed and made fire
retardant easily. Go to a building supply house, and/or a cloth store, be
creative... with a bit of effort you could come up with some aesthetic and
interesting treatments which are unique but still effective. The only real
advantage of 703 and other materials that keep coming up in this list is that
they are effective, available readily to most, and have measured acoustic
properties which makes job planning easier and therefore saves time.
Inability to lay hands on 703 isn't a dealkiller... just a minor
inconvenience.

Good Luck

[archive]

From: Dan Nelson <dprimary@x??????xxxxx.xxxx
Date: Wed Nov 3, 1999 5:00 pm
Subject: Re: Re: Acoustic products in Europe

Isover Type P4/TRHV100 and Type P4/TRHV120 seems to be an equivalent to Owens
Corning 703
based on the absorption coefficients, even if one is fiberglass and one is
mineral wool. Where I live you can't get mineral wool. I'm not even sure what
it is made from, I assume it is made from mica. The panels from Silanto may be
an exact replacement. 703 if the main material that is hard to find. It is hard
to find in the US as well, you can't run down to the hardware store and pick
some up. It is mostly used in commercial construction so you have find
companies that supply large contractors. Most of the other materials is a
matter of translation.

This is the reason I am trying to gather the names of the materials from
different countries. At least 35% of the list is outside of the US. I guess I
should gather sources for these materials as well. If you track down some
sources let me know.

I have a link to Owens Corning on the links page that will take you to pdf's of
their acoustic products You could print the one for 703 panel to show the
distributors. Do you know if any of these manufacturers have web sites? If they
do post the links and I'll add them to the website.

Fabrics shouldn't be that hard to find unless they need to be fireproof. If you
do need fireproof fabrics try a theater supply company. Most of the time I
just go to the cloth store and find something lightweight. That I can see some
light though it, if I hold it up and has a little stretch to it.

Dan Nelson
www.studiotips.com

[archive]

From: "Carlos GarcÌa" <carlgarcia@x??????xxxxx.xxx
Date: Wed Nov 3, 1999 11:25 pm
Subject: RE: Acoustic products in Europe



Hello,

There are some acoustic products makers In Spain:

ISOVER http://www.isover.net/ (fiberglass absorbers)
ACUSTICA INTEGRAL (absorbers and soundproofing)
ARKOBEL http://www.insobel.com/ (soundproofing)

And in other European countries:

ROCKWOOL http://www.rockwool.com/ (mineral wool)
ILLBRUCK http://www.illbruck.com/ (melamine absorbers)
KNAUF http://www.knauf.de/ (wood fibre absorbers)

(All of them have representatives in Spain)

More info about Spanish acoustic sites (in Spanish)
http://members.xoom.com/Sonoweb/

Carlos Garcia

[archive]

From: "Mark R. Nathan" <mark@x???xx.xxxx
Date: Thu Nov 4, 1999 8:12 am
Subject: Re: Acoustic products in Europe

On 11/3/99, acoustics@o... wanted to tell me:
>
>Screw 'em, make your own.. you don't need 703.. buy quilt batting and
>burlap... build your diffusion array... its all pretty straight forward
>stuff. Figuring out what your needs is the hard part.

Owens 703 is the same as a product I have used called Rockwool. Same
specs. Thrope insulation in LA sells and delivers it. comes in 2x4
sheets as well but is brown not yellow.

Good luck in your search

Audio services of all types.. any time!
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