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Post by jlafrenz on Dec 5, 2014 11:16:59 GMT -5
I have made sound absorption panels using 2" Certainteed panels and placed them on the walls at first and second reflection points. The panels have a black sound absorbing surface at the front so the idea is they look good. However I did cover my panels with a poly/cotton material from Jo Anns Fabrics. I've seen Johns Manville in my local Lowe's. Not sure but I would think the performance would be about the same as OC pink fluffy. However rather than R value which is important in insulation, it's gas permeability that's relevant for sound absorption. And here pink fluffy or 701/703 is just as good as anything, especially as the depth starts to exceed 3-6". I've also been wondering about the cellulose blown-in type insulation. At least there's no issue of glass fibers leaking or floating in the air so this seems to be a safer option. I could use it and finish off with a layer of 703 FRK in the front of the panel. I mention R value not as an absorption property, but rather to try and compare apples to apples between brands. I too think the performance would be similar between brands, but wanted to ask those who may have more insight on this. The issue I am facing is that most insulation is 15" wide so that it fits in a stud bay and typically has a kraft face. To make superchunk traps, I need 24" wide and unfaced which it not always a stocked item at the home improvement stores. There is also a price difference between brands. |
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hemster
Global Moderator 
Particle Manufacturer
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Post by hemster on Dec 5, 2014 11:50:38 GMT -5
I have made sound absorption panels using 2" Certainteed panels and placed them on the walls at first and second reflection points. The panels have a black sound absorbing surface at the front so the idea is they look good. However I did cover my panels with a poly/cotton material from Jo Anns Fabrics. I've seen Johns Manville in my local Lowe's. Not sure but I would think the performance would be about the same as OC pink fluffy. However rather than R value which is important in insulation, it's gas permeability that's relevant for sound absorption. And here pink fluffy or 701/703 is just as good as anything, especially as the depth starts to exceed 3-6". I've also been wondering about the cellulose blown-in type insulation. At least there's no issue of glass fibers leaking or floating in the air so this seems to be a safer option. I could use it and finish off with a layer of 703 FRK in the front of the panel. I mention R value not as an absorption property, but rather to try and compare apples to apples between brands. I too think the performance would be similar between brands, but wanted to ask those who may have more insight on this. The issue I am facing is that most insulation is 15" wide so that it fits in a stud bay and typically has a kraft face. To make superchunk traps, I need 24" wide and unfaced which it not always a stocked item at the home improvement stores. There is also a price difference between brands. I have a similar issue. My panels will be 42" wide. That's why I mentioned blowin-in type cellulose... it basically forms it's own shape to the container. |
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Post by yves on Dec 5, 2014 12:31:59 GMT -5
I have made sound absorption panels using 2" Certainteed panels and placed them on the walls at first and second reflection points. The panels have a black sound absorbing surface at the front so the idea is they look good. However I did cover my panels with a poly/cotton material from Jo Anns Fabrics. I've seen Johns Manville in my local Lowe's. Not sure but I would think the performance would be about the same as OC pink fluffy. However rather than R value which is important in insulation, it's gas permeability that's relevant for sound absorption. And here pink fluffy or 701/703 is just as good as anything, especially as the depth starts to exceed 3-6". I've also been wondering about the cellulose blown-in type insulation. At least there's no issue of glass fibers leaking or floating in the air so this seems to be a safer option. I could use it and finish off with a layer of 703 FRK in the front of the panel. I mention R value not as an absorption property, but rather to try and compare apples to apples between brands. I too think the performance would be similar between brands, but wanted to ask those who may have more insight on this. The issue I am facing is that most insulation is 15" wide so that it fits in a stud bay and typically has a kraft face. To make superchunk traps, I need 24" wide and unfaced which it not always a stocked item at the home improvement stores. There is also a price difference between brands. I don't know but the OC R-30 is only $15.98 a roll (25 ft.) at Home Depot. It doesn't really matter that it's only 15" wide because you could always just put more slabs vertically in front of the stacked triangles I guess. To keep the stuff from compressing under itself and toppling, I have seen some people come up with the coolest ideas you could ever imagine: www.gearslutz.com/board/8165676-post16.html |
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Post by deltadube on Dec 5, 2014 12:40:18 GMT -5
I have made sound absorption panels using 2" Certainteed panels and placed them on the walls at first and second reflection points. The panels have a black sound absorbing surface at the front so the idea is they look good. However I did cover my panels with a poly/cotton material from Jo Anns Fabrics. I've seen Johns Manville in my local Lowe's. Not sure but I would think the performance would be about the same as OC pink fluffy. However rather than R value which is important in insulation, it's gas permeability that's relevant for sound absorption. And here pink fluffy or 701/703 is just as good as anything, especially as the depth starts to exceed 3-6". I've also been wondering about the cellulose blown-in type insulation. At least there's no issue of glass fibers leaking or floating in the air so this seems to be a safer option. I could use it and finish off with a layer of 703 FRK in the front of the panel. I mention R value not as an absorption property, but rather to try and compare apples to apples between brands. I too think the performance would be similar between brands, but wanted to ask those who may have more insight on this. The issue I am facing is that most insulation is 15" wide so that it fits in a stud bay and typically has a kraft face. To make superchunk traps, I need 24" wide and unfaced which it not always a stocked item at the home improvement stores. There is also a price difference between brands. great charts to compare here... www.bobgolds.com/AbsorptionCoefficients.htm safe n sound come in a 23in x 47in x 3in bag of 8 sheets... cheers.. |
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Post by jlafrenz on Dec 5, 2014 13:20:29 GMT -5
I mention R value not as an absorption property, but rather to try and compare apples to apples between brands. I too think the performance would be similar between brands, but wanted to ask those who may have more insight on this. The issue I am facing is that most insulation is 15" wide so that it fits in a stud bay and typically has a kraft face. To make superchunk traps, I need 24" wide and unfaced which it not always a stocked item at the home improvement stores. There is also a price difference between brands. great charts to compare here... www.bobgolds.com/AbsorptionCoefficients.htm safe n sound come in a 23in x 47in x 3in bag of 8 sheets... cheers.. Thanks for the link. I found the 24" Safe and Sound at Lowes. I couldn't find any at Home Depot where I was originally looking. |
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Post by jlafrenz on Dec 5, 2014 13:23:30 GMT -5
I mention R value not as an absorption property, but rather to try and compare apples to apples between brands. I too think the performance would be similar between brands, but wanted to ask those who may have more insight on this. The issue I am facing is that most insulation is 15" wide so that it fits in a stud bay and typically has a kraft face. To make superchunk traps, I need 24" wide and unfaced which it not always a stocked item at the home improvement stores. There is also a price difference between brands. I don't know but the OC R-30 is only $15.98 a roll (25 ft.) at Home Depot. It doesn't really matter that it's only 15" wide because you could always just put more slabs vertically in front of the stacked triangles I guess. To keep the stuff from compressing under itself and toppling, I have seen some people come up with the coolest ideas you could ever imagine: www.gearslutz.com/board/8165676-post16.htmlMy thought was to attach 1x2's or 2x2's to the wall and create a corner shelf. I was going to set peg board on top of the wood frame, but after some reading this may not be the best option as it would act like the membrane in between the material. I will probably frame it out and stretch fabric across it to create the shelf. |
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Post by yves on Dec 5, 2014 13:35:31 GMT -5
I don't know but the OC R-30 is only $15.98 a roll (25 ft.) at Home Depot. It doesn't really matter that it's only 15" wide because you could always just put more slabs vertically in front of the stacked triangles I guess. To keep the stuff from compressing under itself and toppling, I have seen some people come up with the coolest ideas you could ever imagine: www.gearslutz.com/board/8165676-post16.htmlMy thought was to attach 1x2's or 2x2's to the wall and create a corner shelf. I was going to set peg board on top of the wood frame, but after some reading this may not be the best option as it would act like the membrane in between the material. I will probably frame it out and stretch fabric across it to create the shelf. Instead of breatheable fabric, plastic orchard netting or rabbit wire fencing also works well. Whichever is more readily available and/or cheapest to you will be fine, though. EDIT - To be able to stretch the netting or fencing, some tying wire should help.  |
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Post by novisnick on Dec 9, 2014 14:31:35 GMT -5
no more boomy bass here  white is 4ft x 2ft x 6in blue is 6ft x2ft x 6in and the red is 4ft x 2ft x 3in.. safe n sound.. blue one is on an angle to the corner big air pocket makes the trap more efficient .. cheers.. Bob, why is your Sub like that? is it a down firing Sub?..if so than never mind.. I believe this is an old picture,before he made the risers and turned the down firing PSA XS15se on their sides. |
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Post by deltadube on Dec 10, 2014 2:01:43 GMT -5
Nick, Thanks I know some do that so they can get too the setting on the back easier laid back and ezzz that's how I like em!!! lol   |
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