Acoustical Treatments Master Thread - Page 348 - AVS Forum
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post #10411 of 10427 Old 07-20-2014, 08:22 AM
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Thanks Glenn,

What do you think about the back wall? I have two columns about 5 feet apart with dipole speakers inside the columns. I was going to put 4 inch thick OC 703 between the columns and put the FRK facing on so I don't absorb too much of the sound from the dipole speakers. I still want the sound to reflect a little.
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post #10412 of 10427 Old 07-20-2014, 09:15 AM
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My A0 poster of my cat:
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post #10413 of 10427 Old 07-20-2014, 10:28 AM
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Quote:
Originally Posted by myfipie View Post
No, you never want to use facing on the panels if in the early reflection point.

http://www.gikacoustics.com/video-ea...ection-points/
Thanks, I was getting confused from your earlier qoute... Now I understand.

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post #10414 of 10427 Old 07-20-2014, 09:43 PM
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Quote:
Originally Posted by myfipie View Post
Having the fiberglass in those corners should be fine, if I am understanding your question correctly. Basically all corners are good to use for bass trapping.
Thanks Myfipie,

Just want to clarify before cutting up all this expensive OC703... I am cutting them into 16 triangles, as opposed to the popular 8 pieces.

This is OK yes??
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post #10415 of 10427 Old 07-21-2014, 03:17 AM
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Just want to clarify before cutting up all this expensive OC703... I am cutting them into 16 triangles, as opposed to the popular 8 pieces.
That is going to be pretty small and is not going to work all that great below 200hz or so. I recommend making the triangles no less then 16"x16"x24" honestly.

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post #10416 of 10427 Old 07-21-2014, 06:38 AM
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Ready to buy Roxul and Pink Fluffy. I got a few important questions before committing a lot of money to it.

1. Should I get 40, 60 or 60 KG/M3?
2. Pink Fluffy (glass wool). This if for under the Riser (as a general bass trap). I intend to fill it all up, about 6 feet in length and 10 feet wide, and 1 feet high. Again, people say get pink fluffy/glass wool instead of RockWool, so, again, the question, would 30 KG/M3 work?
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post #10417 of 10427 Old 07-29-2014, 11:56 AM
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I am looking to make some bass traps for my rear wall in my HT. The wall is 15' wide, and I was thinking of using Roxul RX60 3" thick with 2 layers... Is this a good way to go?

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post #10418 of 10427 Old 07-29-2014, 09:53 PM
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Quote:
Originally Posted by ellisr63 View Post
I am looking to make some bass traps for my rear wall in my HT. The wall is 15' wide, and I was thinking of using Roxul RX60 3" thick with 2 layers... Is this a good way to go?
6" thick won't do much bass trapping. It'll probably rather have great influence on everything except the bass, so it's still not a bad idea.
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post #10419 of 10427 Old 07-29-2014, 10:50 PM
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Originally Posted by Nightlord View Post
6" thick won't do much bass trapping. It'll probably rather have great influence on everything except the bass, so it's still not a bad idea.
I should have said I will also have a 1' x 2' soffit also all around the room for bass traps, plus in 2 of the corners behind my AT screen. I hope i will have enough.

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post #10420 of 10427 Old 07-29-2014, 10:52 PM
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Quote:
Originally Posted by ellisr63 View Post
I should have said I will also have a 1' x 2' soffit also all around the room for bass traps, plus in 2 of the corners behind my AT screen. I hope i will have enough.
Much better. No riser for back seats that you can use as well?
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post #10421 of 10427 Old 07-29-2014, 10:56 PM
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Quote:
Originally Posted by Nightlord View Post
Much better. No riser for back seats that you can use as well?
We have a riser, but the way it was built we can't use it for a bass trap. If need be, we might be able to get a couple of feet of depth behind the front speakers to make a bass trap 19' wide x 8' tall. Currently I was planning on 2" Roxul R80 for the whole wall behind the screen. How do I know when I have enough?

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post #10422 of 10427 Old 07-29-2014, 11:15 PM
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Quote:
Originally Posted by ellisr63 View Post
How do I know when I have enough?
That's easily answered - you never have enough basstrapping. You'll just have to use your ears and any measurement equipment available to decide when you're content.
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post #10423 of 10427 Old 07-30-2014, 09:20 AM
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Quote:
Originally Posted by myfipie View Post
Having the fiberglass in those corners should be fine... Basically all corners are good to use for bass trapping.
What about a corner that ends and opens into a room after about a foot or two? Would it make sense to place a bass trap where the red line is in my room diagram attached? Or is that not considered a "corner" for the purpose of bass trapping?
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Energy Speakers' specs spreadsheet.

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post #10424 of 10427 Old 07-31-2014, 07:31 AM
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Quote:
Originally Posted by PoshFrosh View Post
What about a corner that ends and opens into a room after about a foot or two? Would it make sense to place a bass trap where the red line is in my room diagram attached? Or is that not considered a "corner" for the purpose of bass trapping?
Those corners would work. They are pretty much at the end of the wall/ceiling/floor boundaries.

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post #10425 of 10427 Old 08-01-2014, 12:47 AM
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Quote:
Originally Posted by PoshFrosh View Post
What about a corner that ends and opens into a room after about a foot or two? Would it make sense to place a bass trap where the red line is in my room diagram attached? Or is that not considered a "corner" for the purpose of bass trapping?
Sure. And if you do symmetrically the same in the other front corner, you'd get a really big one - and a nicer look.

If I read the plan correct, you have a big opening in the side and also no door before the staircase? I'd try hang some heavy drapes there, I think that could have noticable effect too.

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Last edited by Nightlord; 08-20-2014 at 01:16 AM.
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post #10426 of 10427 Old 08-17-2014, 11:05 AM
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How do you attach ceiling panels? I have a double drywall with green glue and hat channel ceiling. I was thinking of using these, but I am not sure they can handle the weight of 2'x4'x4" Acoustic panels. If I use toggle screws then I have to penetrate the double drywall, and will loose the benefit of the soundproofing won't I?

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post #10427 of 10427 Old 08-18-2014, 07:46 AM
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Those are made for walls, not ceiling so I would not recommend them. I always use butterfly/toggle screws.

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