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Author Topic: back wall diffusor i built  (Read 4043 times)

bryanarchy

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back wall diffusor i built
« on: October 10, 2006, 06:56:37 PM »

Over the last 8 months i've been gutting my basement to foundation and rebuilding it as a nice studio that will suit my needs. I spent about a year planning before i did anything. I consulted with accoustic engineers, i read books, i did everything to get a better understanding of accoustics. I also went from a dude who knew very little about construction to someone who framed, wired, insulated, drywalled, painted, floored, and everything inbetween.

The studio is nearly complete. It's functional but i'm still tweaking the acoustic treatment to get what i want out of the rooms. I'll post more pics when i finish all the trim, etc.

I did finish my mixroom quadratic diffusor yesterday though:

http://static.flickr.com/106/265509035_1c940c9eef.jpg

It's 4'x8'x1'(deep). When framing the mix room, we left a 6 inch recess so the diffusor only sticks out 6" from the wall.

I thought it would make a subtle difference but it was pretty audible. I wish i had an RTA to test before and after, but i did some listening before we put it in and then after. The stereo imaging and transients at mix position got tighter. According to the calculations, it should diffuse from about 200-2500hz.

This thing was super cheap to make too; i think it cost me about $125-150 in wood. The tricky part was just the planning and setup to build it. It's not perfect, and if i did it again, i would have changed a couple things, but i'm really proud of it.
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compasspnt

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Re: back wall diffusor i built
« Reply #1 on: October 10, 2006, 07:04:07 PM »


Very nice.  Congratulations.
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j.hall

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Re: back wall diffusor i built
« Reply #2 on: October 10, 2006, 09:40:16 PM »

nothing beats education, and nothing feels better then knowing you did it yourself from the design, to the construction.

i just finished tweaking my acoustics a few months ago.  i'm happy to say im' finally done......until i move at least.
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Tom C

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Re: back wall diffusor i built
« Reply #3 on: October 11, 2006, 07:04:30 AM »

That's a beauty!

Right now I'm designing a room with a (more or less) equal
reverb time for all frequencies.
That room will be a bit dry, so I plan to add something like
this to make it (in a controlled way) more live again.
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Tom

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rankus

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Re: back wall diffusor i built
« Reply #4 on: October 17, 2006, 01:46:17 PM »



Hey Bryan,
Any drawings that you would care to share with us?  Construction photos / tips?

I would be interested in building these ....
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Rick Welin - Clark Drive Studios http://www.myspace.com/clarkdrivestudios

Ive done stuff I'm not proud of.. and the stuff I am proud of is disgusting ~ Moe Sizlack

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bryanarchy

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Re: back wall diffusor i built
« Reply #5 on: October 17, 2006, 09:05:12 PM »

rankus wrote on Tue, 17 October 2006 11:46



Hey Bryan,
Any drawings that you would care to share with us?  Construction photos / tips?

I would be interested in building these ....


For sure i'd be happy to give some pointers.

The best way to do all the calculations is with the handy little calculator at this fellow's website: http://www.mhsoft.nl/diffusor.asp

I just spent the last 15 minutes trying to just explain construction on here, but instead I'll take a few more pictures as well as draw up a few diagrams in the next couple of days.

It's really really easy and inexpensive to do, especially if you have a table saw, nail gun and a second set of hands. I'm just ecstatic with the results too. It made a big improvement in the room too.
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M Carter

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Re: back wall diffusor i built
« Reply #6 on: October 18, 2006, 11:33:40 AM »

hey man,

could you point me in the right direction as far as the research you did ?

I'm trying to make some sound absorbing panels for the back room of my apartment which I typically use as a home studio.

Matt
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Craig Patterson

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Re: back wall diffusor i built
« Reply #7 on: October 24, 2006, 01:07:21 PM »

M Carter wrote on Wed, 18 October 2006 16:33

hey man,

could you point me in the right direction as far as the research you did ?

I'm trying to make some sound absorbing panels for the back room of my apartment which I typically use as a home studio.

Matt

I don't have plans for quadratics, but I thought I'd chime in with some plans for absorbers and QRD (skyline-type) diffusors.

-Craig
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