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Author Topic: D.I.Y. Diffusers  (Read 59447 times)

Craig Patterson

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Re: D.I.Y. Diffusers
« Reply #45 on: October 10, 2005, 11:13:20 am »

Here's a link to the ones I built, which also has links to the BBC site, and the formula that was used to calculate the piece sizes.  There's no way these should cost anyone $350 to build.  They should cost less than twenty bucks, and they weigh 23 pounds apiece.

-Craig

http://www.pmerecords.com/Diffusor.cfm
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blairl

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Re: D.I.Y. Diffusers
« Reply #46 on: October 10, 2005, 02:33:30 pm »

Ivo wrote on Sun, 09 October 2005 04:33

what acoustic difference does it make to add some rockwool layer on the bent plywood from inside or to keep it simply plain? Or to put rockwool inside the frame on the wall ? Just to bend the plain plywood would be the easiest of course ...


The bent plywood will resonate at a specific frequency.  The rockwool or fiberglass will absorb this resonance.  The more rockwool you put inside, the broader the bandwidth of absorption will be but the lower the peak will be.  In short, you do want rockwool inside the polydyndrical diffusors.  I would put them on the wall insdide and not on the back of the bent plywood.  This should allow for the plywood to resonate more freely, which is good, and the rockwool on the wall behind the plywood will absorb or "trap" the resonance.
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WaveGuide

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Re: D.I.Y. Diffusers
« Reply #47 on: December 09, 2007, 04:28:13 pm »

For anyone looking for Diffusers like the one's discussed in these previous posts and does not want to mess with DIY, I might have a solution for you.

http://www.waveguideacousticsolutions.com

Made from a hard closed cell 2.5# foam and mounted to 3/8" plywood and then coated in multiple layers of flat latex paint. These units have been raved about by those that use them.
index.php/fa/6913/0/
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Mathieu Delquignies

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Re: D.I.Y. Diffusers
« Reply #48 on: March 04, 2008, 08:25:55 am »

It's not DIY but an interresting product, environmentally progressive, aesthetic and affordable design :

http://www.mioculture.com/store/pc/viewPrd.asp?idcategory=2& amp;idproduct=9

I thought it makes not more than egg boxes, but maybe fill in with some material like foam ?...

Is anybody already try it ?
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compasspnt

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Re: D.I.Y. Diffusers
« Reply #49 on: March 04, 2008, 10:07:26 am »

Mathieu Delquignies wrote on Tue, 04 March 2008 08:25

It's not DIY but an interresting product, environmentally progressive, aesthetic and affordable design :

  http://www.mioculture.com/store/pc/viewPrd.asp?idcategory=2& amp; amp; amp;idproduct=9

I thought it makes not more than egg boxes, but maybe fill in with some material like foam ?...

Is anybody already try it ?



These look really nice, and are ertainly cost effective.  What I do not see on their site is any documentation related to effect upon low freq's, nor any mention of fire safety.

Egg cartons, of course, are highly useless because of those two factors.  Really nothing done below 500.

Here is some egg information:


index.php/fa/7952/0/
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compasspnt

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Re: D.I.Y. Diffusers
« Reply #50 on: March 04, 2008, 10:09:17 am »

index.php/fa/7953/0/
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compasspnt

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Re: D.I.Y. Diffusers
« Reply #51 on: March 04, 2008, 10:14:12 am »

index.php/fa/7954/0/
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compasspnt

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Re: D.I.Y. Diffusers
« Reply #52 on: March 04, 2008, 10:16:02 am »

index.php/fa/7955/0/
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Steve Hudson

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Re: D.I.Y. Diffusers
« Reply #53 on: March 04, 2008, 01:01:37 pm »

Bruce Maddocks designed some nifty parabolic diffusors to attach to the front of some Helmholtz resonators he also designed for a previous studio of mine. In concert with the RPG array in the middle, we liked the results.

index.php/fa/7957/0/
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0dbfs

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Re: D.I.Y. Diffusers
« Reply #54 on: April 01, 2008, 11:32:11 am »

Howdy,
This is a great thread. I was planning to do poly's but it looks like the DIY skylines aren't too bad after all.

Thanks for the info everyone!

Cheers,
j
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Jonathan Burtner
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Hallams

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Re: D.I.Y. Diffusers
« Reply #55 on: August 20, 2008, 01:53:06 am »

Here is a pic of the diffuser I helped put up in a mates  mix room.
The design measurements etc were done by Graham Thirkle who also designed the room dimensions etc.
I work regularly in this room and like it a lot. The walls and ceiling are angled so the reflections go to the diffuser.

index.php/fa/9758/0/
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Chris Hallam.
Melbourne, Australia.
 

Vertigo

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Re: D.I.Y. Diffusers
« Reply #56 on: October 20, 2008, 03:42:56 pm »

Quote:

Here is a pic of the diffuser I helped put up in a mates mix room.


Is it just me, or is that thing BREATHING???

-Lance

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KAyo

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Re: D.I.Y. Diffusers
« Reply #57 on: November 05, 2008, 06:09:56 am »

Hi Chris,

So.. are the depth's off the slats different, or are they mushrooming out together from the base frame?

Often, thinking of back wall design myself.

Cheers,
Kayo
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Hallams

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Re: D.I.Y. Diffusers
« Reply #58 on: November 05, 2008, 12:31:37 pm »

KAyo wrote on Wed, 05 November 2008 22:09

Hi Chris,

So.. are the depth's off the slats different, or are they mushrooming out together from the base frame?

Often, thinking of back wall design myself.

Cheers,
Kayo


Hi Kayo. The slats are at right angles to the rear wall and of differing lengths.
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Chris Hallam.
Melbourne, Australia.
 

silverback-recording

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Re: D.I.Y. Diffusers
« Reply #59 on: May 27, 2009, 09:51:02 pm »

I emailed mio culture.  They had an acoustics sheet available in pdf form.  Here it is as two jpg files.  Sorry about the quality, it was sent in poor condition, and I didn't change that since it should still be legible.index.php/fa/12378/0/
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