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So as a backyard HT -- is a fiberglass yurt okay?

post #1 of 10
Thread Starter 
So I have been doing a bit of reading, and I found some prefab buildings that seem to be more structurally sound than normal sheds or trailers, specifically of the yurt type. Has anyone looked at these before? How good, bad, or terrible is this shape for acoustics? What can be done with this?

Here is the page that sells these things that I was looking at:

http://www.alternativebuildings.com/

What do you all think? Would such a thing work okay for a home theater if you don't have room or want to create a new one in your house? How is boat-style fiberglass as an acoustic material?
post #2 of 10
I have read that if one were able to do a room with no corners it would be optimal for acuoustics, so you may be onto something.
post #3 of 10
Thread Starter 
Quote:
Originally Posted by oman321 View Post

I have read that if one were able to do a room with no corners it would be optimal for acuoustics, so you may be onto something.

Really? would a circular, oval, egg, other elliptical shape be theoretically better? These seem to be mostly circular.

But the REAL thing that attracted me was the price!
post #4 of 10
"boat-style" fiberglass walls would need to be treated just like any other hard surface. I room shaped like that has very unique acoustical challenges.

If you are serious about using such a building you should hire one of the acoustical experts on here.
post #5 of 10
A circle focuses sound toward its center. This makes concentric circular room modes. This is no better than normal rectilinear room modes - just weird and different!
post #6 of 10
Quote:
Originally Posted by Gavinfoxx View Post

Really? would a circular, oval, egg, other elliptical shape be theoretically better? These seem to be mostly circular.

But the REAL thing that attracted me was the price!

An expert would be a good idea. I simply read in passing on here somewhere, and I believe it was one of the experts that if one could eliminate a corner or make a rounded off room it would be ideal, but since it's not easily possible it became a moot point.

Look Bpape as one of the acoustical experts. Not sure about who else but hopefully others will chime in.
post #7 of 10
Thread Starter 
Well would "fixing" this to be decent be expensive enough to overcome the cost savings of having a more traditional shed built? Are there any cheap/prefab places that you all know of for sheds or backyard "rooms" that have more optimal shapes?
post #8 of 10
When I was kicking around adding a dome to my next HT, my early read of domes were they weren't a great idea. I link in the thread here:

http://www.avsforum.com/avs-vb/showt...7#post16739607

Quote:


The Dome shape is by far one of the most 'unfriendly' and undesireable shapes acoustically. It caused great amounts of focusing and transmission of sound along the dome. It's a cool, "cooper time cube" like effect, but it's not the basis of a good tracking space IMHO.

We have designed spaces with architecturally domes but these have always been for architectural considerations and typically treated with deadening materials along the dome area.

We also recently worked on a project for MTV: the BAnd In A Bubble TV show. The set which was a dome was designed before we were hired as acoustic consultants and we immediately pointed out several potential problems inherent in the design. We were able to address most of these issues be adding a high amount of rigid fiberglass absorption behind fabric finishes. This combined with the remainder of the 'build-out' inside the dome served to break up and absorb almost all of the detrimental affects of the dome shape.

Long and short, domes are very cool architectural shapes but they are not condusive to good acoustic recording OR playback rooms. If you MUST use dome shapes, expect to have to treat them heavily and/or use enough diffusion that the dome will most likely not even resemble a dome once you're done.

Hope this helps.

Francis Manzella - President, FM Design Ltd.
- Managing Director, Griffin Audio

http://recforums.prosoundweb.com/index.php/m/279352/0/
post #9 of 10
Thread Starter 
Quote:

The link doesnt seem to go anywhere, what was there? Also does anyone know of alternative cheap/prefab places for backyard sheds and such that use better shapes?
post #10 of 10
Quote:
Originally Posted by Gavinfoxx View Post

The link doesnt seem to go anywhere, what was there? Also does anyone know of alternative cheap/prefab places for backyard sheds and such that use better shapes?

Link works for me? Its the source of the quote I pasted in if you wanted to read the rest of the thread.
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