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Old 28th December 2010, 04:41 PM   #31
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Quote:
Originally Posted by toprepairman View Post
Incidentally, the best material to fill your boxes is natural fibre carpet underlay, Don't touch the horrid rubberised stuff.
regards
Henry.
Im using rockwool and polyfill.
Well, ill continue with the enclosures
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Old 28th December 2010, 06:48 PM   #32
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Quote:
Originally Posted by ramiro77 View Post
Im using rockwool and polyfill.
Well, ill continue with the enclosures
OOOH,
Rock wool, read the MSDS. That stuff is as bad as asbestos. Every time the port pushes air out the fibers will be comming out too.
DT
Serious Stuff!
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Old 28th December 2010, 08:42 PM   #33
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Yes, i know that. But i use rockwool and polyfill in sealed enclosures, not in vented, for the reason that you said before.
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Old 29th December 2010, 08:46 AM   #34
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I was going to try rockwool on a sealed enclosure, and for an acoustic panel. Then you got me all scared. So I did some reading.
This pretty much sums up the reasearch (by world health organization, by the way).
I read all of page two, and many other pages. But page 2 is most important!
http://monographs.iarc.fr/ENG/Monogr...1/mono81-5.pdf
Use common sense when using it.
I would assume that you could use it in a ported enclosure if you put in inside, or cover with acoustic fabric. The fibers are NOT that similar to asbestos. Rockwool is similar to fiberglass, so don't be scared to use it.

From wikipidia, also...

  • R38 – Irritating to the skin
  • R39 – Danger of very serious irreversible effects
  • R40 – Possible risk of irreversible effects
  • S36/37 – Wear suitable protective clothing and gloves.
Because European produced rock (stone) wool and glass wool is bio soluble, R39 and R40 do not apply, only R38 applies. This irritation to the skin is not a chemical irritation but only a temporary mechanical irritation, comparable with exposure of the skin to bio soluble materials such as straw, grass, or hay.






The stuff I am going to be using is commonly used for hydroponics and is produced by europeans. Rockwool under brand name Grodan. I am in SoCal and there is a hydro place one block from me. And countless others Thanks, medical pot




I would try the woofer in different enclosures while measuring and recording results.
Post up on here so we can all see what happens
Hope this is not too off topic, as I am also thinking of trying different enclosures with different stuffing. The woofer I am going to play with is designed for sealed, but may play with some vented boxes....
Todd
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Old 29th December 2010, 12:22 PM   #35
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Why take any risks with rockwool when other materials are so much better?
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Old 29th December 2010, 01:12 PM   #36
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Perhaps they are cheaper?
I dont know. I never used the other materials mentioning here.
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Old 29th December 2010, 05:38 PM   #37
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Agreed costs are a factor. A roll of carpet underlay was 25 UK pounds at B&Q last time I could find any.
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Old 29th December 2010, 07:47 PM   #38
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I was looking for a definition in Spanish for carpet underlay (do not forget I am Argentinian, English is not my native language), but did not find much about it. What is it? Or what are their uses? Maybe then I can identify it.

On the other hand, in one hour I will finish the enclosures. Tomorrow I will do the bends in the edges of the fronts and I'll start with painting. I guess that'll end for next Monday or Tuesday. And I take another day to make cloth grilles, but that is a cosmetic issue, no big deal.
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Old 29th December 2010, 07:56 PM   #39
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Si tu quieres, yo puedo preguntar mis amigos que es el nombre de este material.
I speak enough spanish that I may be able to help
Mi amigo dice que es posible ellos usan la palabra "esponja".
Es para abajo la alfombra. Preguntas un trabajador de alfombra.
Carpet Padding - Carpet Underlay

Last edited by TMHutson; 29th December 2010 at 08:03 PM.
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Old 29th December 2010, 08:56 PM   #40
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Excelente, muchas gracias por tu amabilidad

I was asking, and is not a material used in my country for this purpose. As you said earlier, is something like a sponge.
I'll keep asking anyway, and if I can not get this material, I will use glass wool or rock wool. I have a outdoor space to work comfortably and without risk to those who live with me. And the wool in conjunction with the polyfill probably do a good job.

Thanks again, this time in English No need to speak in my language, I fully understand you. The only problem is that, as in this case, there are some materials that are not used here, or that are not easy to get.
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