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15th January 2008
| #1 |
| Lives for gear  Joined: Jan 2008 Location: Houston, Texas
Posts: 2,443
Thread Starter | Mineral Wool Density
I have in my notes that with OC703 or other Fiberglass insulation, you need a density of 3-6lb. Is this the same with Mineral Wool? I keep running into 2.5 material. thanks |
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15th January 2008
| #2 | |
| Gear Guru  Joined: Jul 2005 Location: Atlanta, GA
Posts: 11,995
| Quote:
It is best to use 3 to 8 pound of the mineral wool. The 2.5 will work but you need to make it pretty thick for bass trapping. Glenn
__________________ Glenn Kuras GIK Acoustics USA GIK Acoustics Europe 770 986 2789 (USA) +44 (0) 20 7558 8976 (UK) See the NEW Scopus Tuned Trap  | |
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15th January 2008
| #3 |
| Gear maniac  Joined: Dec 2007
Posts: 260
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it shouldn't be too hard to find a thicker density.
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15th January 2008
| #4 |
| Lives for gear Joined: Jan 2008 Location: Houston, Texas
Posts: 2,443
Thread Starter |
Ok, i just found it. 24"x48"x4" in a 4lb density. They call it Safing. Example: Minwool-1200 safing 4pcf Will the 4pcf work for a 4" bass - low mid trap? Thanks  |
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15th January 2008
| #5 | |
| Gear Guru Joined: Jul 2005 Location: Atlanta, GA
Posts: 11,995
| Quote:
Glenn | |
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15th January 2008
| #6 |
| Lives for gear Joined: Jan 2008 Location: Houston, Texas
Posts: 2,443
Thread Starter |
I'm not done surfin and huntin and I will look for 6 or 8. thanks, you guys are awesome.  |
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2nd April 2010
| #7 |
| Gear interested Joined: Mar 2010
Posts: 16
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anyone use 10 lb mineral wool in 2". I found 10 lb 2" and the 4lb 4". Do you think the 10 lb is too dense and will reflect too much of the higher frequencies back?? It was way cheaper than 703, but if it's too dense I need to take it back and get 703... Matt |
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3rd April 2010
| #8 |
| Lives for gear  | Equivalents
703 has a density of 3 pounds per cubic foot = 48 Kg per cubic metre. 705 is double that. Rockwool needs to be a little denser, say a quarter, to achieve the same absorption as glass. So 703 equivalent in Rock would be 4 pcf 60Kg. RS60 or RW3. DD |
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3rd April 2010
| #9 | |
| Lives for gear  Joined: May 2004 Location: Hamilton, On Canada
Posts: 3,697
| Quote:
Andre
__________________ Good studio building is 90% design and 10% construction. | |
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