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DIY diffusion panel

72.220.169.158
Posted on February 8, 2017 at 18:14:33
Green Lantern
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Posts: 16952
Location: San Diego, Ca
Joined: November 12, 2002
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  Since: June 17, 2003
 thought I'd share this with everyone, made this over the weekend. Fits my needs in the sense that it's portable -meaning it covers the tv and once the listening session is over it's lightweight enough (less than 5 lbs) to move and hang on the wall.

Total cost: about $50

gonna remove the throw rugs on the walls and make more for the front and side walls over the weekend.

Initial impressions are very promising

source










 

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RE: DIY diffusion panel , posted on February 8, 2017 at 19:58:14
watts
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Posts: 536
Location: B.C.
Joined: June 30, 2004
 almost looks professional! :) Foam or cardboard?

 

RE: DIY diffusion panel , posted on February 9, 2017 at 05:15:36
Green Lantern
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Posts: 16952
Location: San Diego, Ca
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  Since: June 17, 2003
 sort of a foam; there's a video explanation on the OP.

Will look 'professional' the next go 'round, I plan on doing several-









 

Nice work!, posted on February 9, 2017 at 05:57:31
E-Stat
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  Since: April 5, 2002
 Most of my room treatments are also DIY - and can help the room acoustics substantially.

I'm thinking I need a bit more behind my speakers than the two Skylines.

 

RE: DIY diffusion panel , posted on February 9, 2017 at 10:01:30
Satie
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Posts: 5426
Joined: July 6, 2002
 Looks very promising. If you are going to do another set then consider filling in more of the center cavity.

 

RE: DIY diffusion panel , posted on February 9, 2017 at 17:40:42
Green Lantern
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Posts: 16952
Location: San Diego, Ca
Joined: November 12, 2002
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 Yep that's the plan, gonna pack em' in there tighter. Getting a couple more boxes in the mail on Friday.









 

diffusion panel? , posted on February 10, 2017 at 11:05:14
M3 lover
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  Since: July 4, 2007
 GL,

My immediate question as soon as I hear the description was the same as comments posted following the video, isn't this more of an absorber than diffuser? Open cell foam will trap sound waves, not diffuse them.

This is not to say your effort was not worthwhile. Only that it may be doing something different than you expected.

"The secret of life is honesty and fair dealing, if you can fake that you've got it made." Groucho

 

RE: nice work (nt), posted on February 10, 2017 at 18:46:58
benie
Audiophile

Posts: 1851
Location: Alberta, Canada
Joined: October 24, 2004
 nt

 

RE: diffusion panel? , posted on February 11, 2017 at 05:06:53
Green Lantern
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Posts: 16952
Location: San Diego, Ca
Joined: November 12, 2002
Contributor
  Since: June 17, 2003
 I figure anything would be an improvement over that TV!









 

RE: nice work (nt), posted on February 13, 2017 at 20:09:44
Green Lantern
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Posts: 16952
Location: San Diego, Ca
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 thanks! working on another









 

RE: DIY diffusion panel , posted on February 26, 2017 at 23:05:52
pictureguy
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Posts: 22597
Location: SoCal
Joined: October 19, 2008
 diffusers are tuned in a sense.

Here is link to BBC calculator for a certain type of diffusor.

Enter your frequency limits and it'll spit out the desired diffuser dimensions.


Too much is never enough

 

RE: diffusion panel? , posted on February 26, 2017 at 23:11:32
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
 Longer waves can be diffused by larger objects. the very highest frequencies may indeed go INTO the foam and 'get lost'. At the very shortest wavelengths.

the pictured device WILL diffuse, but probably not a very wide bandwidth.


Scan down to the section where it notes LF limits based on well DEPTH and HF limits based on well WIDTH.

I would hope for some help from a Math Wiz to figure this out.




Too much is never enough

 

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