THX Style Baffle Walls for AT Screens - Page 8 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #71 of 181 Old 02-18-11, 11:32 PM
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Re: THX Style Baffle Walls for AT Screens

Hey Mark,

Couple of questions..
The above baffle wall and your wall show the joins as being sealed..Is this absolutely necessary or will a good butt joint suffice?

Also I'm planning on going down to Clark Rubber on Monday to pick up the convoluted foam..
They have two thicknesses..One they call 30-40 (the thinnest) and 40-50..sheet size for both is 2032 x 1524..
Is there any advantage in having the thicker material or doesn't it matter?
There is a big difference in price for the thicker one!

Prof..
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post #72 of 181 Old 02-19-11, 01:38 AM Thread Starter
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Re: THX Style Baffle Walls for AT Screens

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Prof. wrote: View Post
Hey Mark,

Couple of questions..
The above baffle wall and your wall show the joins as being sealed..Is this absolutely necessary or will a good butt joint suffice?
A good butt joint will suffice.

Quote:
Also I'm planning on going down to Clark Rubber on Monday to pick up the convoluted foam..
They have two thicknesses..One they call 30-40 (the thinnest) and 40-50..sheet size for both is 2032 x 1524..
Is there any advantage in having the thicker material or doesn't it matter?
There is a big difference in price for the thicker one!
The foam should be 1" or 25mm think (at the peaks of the hills) and you want the grade 28/400 (just ask to confirm that) which denotes the weight or density of the foam.

Yes, they charge like a wounded bull for this stuff.

Having said all that, the baffle wall in the photos I've posted will use car carpet because at the end of the day, it is about absorbing the HFs that bounce between the screen and the wall. The goal is to direct the sound from the LCRs (80~20K) into the room and your not concerned about bass. I think the reason people are put off by this is that the moment the word "treatments" is used, people automatically assume bass control. The type of control you get here is probably 1.5K and above, even when SUBs are mounted into the wall as is the case in the install I've documented. If he needs more than what the carpet provides, we will add foam under the carpet later. Like so many of us, he is doing this on a tight budgets, so this is a case of creating, finding and solving the issues as they arise.
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post #73 of 181 Old 02-19-11, 05:14 PM
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Re: THX Style Baffle Walls for AT Screens

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Having said all that, the baffle wall in the photos I've posted will use car carpet because at the end of the day, it is about absorbing the HFs that bounce between the screen and the wall. The goal is to direct the sound from the LCRs (80~20K) into the room and your not concerned about bass. I think the reason people are put off by this is that the moment the word "treatments" is used, people automatically assume bass control. The type of control you get here is probably 1.5K and above, even when SUBs are mounted into the wall as is the case in the install I've documented. If he needs more than what the carpet provides, we will add foam under the carpet later. Like so many of us, he is doing this on a tight budgets, so this is a case of creating, finding and solving the issues as they arise.
Thanks Mark..I'm going to take your advice and get the auto carpet instead..It's about half the price of the foam and I can get it locally..
Should it not be enough dampening, I can always add some foam later..

Prof..
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post #74 of 181 Old 02-19-11, 10:58 PM Thread Starter
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Re: THX Style Baffle Walls for AT Screens

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Thanks Mark..I'm going to take your advice and get the auto carpet instead..It's about half the price of the foam and I can get it locally..
Should it not be enough dampening, I can always add some foam later..
And it is BLACK
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post #75 of 181 Old 02-20-11, 04:37 PM
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Re: THX Style Baffle Walls for AT Screens

Yes it's really black!..It's called black velour car carpet..comes in 2M. wide rolls and I bought it from Bunnings..It cost $51 for 1.5M...Does that sound like the right stuff?

I'm about half way through making the mounting frames for the baffle wall and should have the whole thing completed today..

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post #76 of 181 Old 02-20-11, 04:52 PM
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Re: THX Style Baffle Walls for AT Screens

Hey Prof.

Any teaser photos for us

Simon


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post #77 of 181 Old 02-20-11, 04:58 PM
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Re: THX Style Baffle Walls for AT Screens

Hi Simon,

I don't have any at the moment...didn't even stop to take photos yesterday!
I'll take some today as I progress..

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post #78 of 181 Old 02-20-11, 05:00 PM
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Re: THX Style Baffle Walls for AT Screens

Look forward to seeing them


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post #79 of 181 Old 02-20-11, 05:16 PM Thread Starter
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Re: THX Style Baffle Walls for AT Screens

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Yes it's really black!..It's called black velour car carpet..comes in 2M. wide rolls and I bought it from Bunnings..It cost $51 for 1.5M...Does that sound like the right stuff?
Sounds like the same stuff

Here is an update to that other baffle wall project. In this case, he has bought the 1m wide stuff x 3 lengths. He just needs to patch around the holes and its all good.
Attached Thumbnails
THX Style Baffle Walls for AT Screens-chris-k-baffle-wall-2.jpg  

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post #80 of 181 Old 02-20-11, 08:44 PM
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Re: THX Style Baffle Walls for AT Screens

Having a coffee break, so I got a couple of shots of the bottom support framing before I go any further..





The vertical post in the centre supports the weight of the centre speaker now, but that will be removed later..

Break over!..time to get back to work..

Prof..
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