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new build room

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Posted on August 22, 2012 at 04:01:30
volumezero
Audiophile

Posts: 95
Location: BKK
Joined: July 7, 2004



I'm building a house and was thinking of building a listening room with the dimensions as per the image (measurements are in meters). the room will probably be built entirely of concrete on the roof of the house as that is the only available space left.

my current speakers are Dynaudio Sapphire

should I go with this cardas golden trapagon or be better off with a rectangular room using the louden or golden ratio?

thanks in advance for your input

 

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RE: new build room, posted on August 22, 2012 at 11:20:49
Ethan Winer
Manufacturer

Posts: 1709
Location: New Milford, CT USA
Joined: December 3, 2003
 There are many "good" ratios, and often the one that results in the larger size is better just because you get a bigger room. Further, it's difficult to predict modes in a room with angled walls. But what you propose seems decent enough. Even more important than the ratios is how well it's treated with bass traps etc.

--Ethan

 

RE: new build room, posted on August 23, 2012 at 21:27:13
volumezero
Audiophile

Posts: 95
Location: BKK
Joined: July 7, 2004
Thank you very much Ethan.

As this is the only shot I'll get at building a dedicated listening room from scratch, I want to try to get as close to "optimum" as I can.

so I ascertain that bigger is better (within the limits of the ratio) which is what I will shoot for. also I will pay extra attention to the treatments as suggested. I was thinking that I will have all walls built from concrete for stability/rigidity and run a thick carpet from the rear wall (behind the speaker) to the listening position. then the walls, ceilings, and corners will be treated with whatever treatment is necessary.

with regards to the angled wall / ceilings, it perked my curiosity since I saw it on Cardas website and read in stereophile and other sources that ideally walls shouldn't be parallel. I'm still on the fence myself since most listening rooms I've visited and read about are rectangle or don't have such angled walls. moreover, I wonder if in addition to angled walls, there will be any benefits to slightly concave walls?





 

RE: new build room, posted on August 24, 2012 at 09:12:28
Ethan Winer
Manufacturer

Posts: 1709
Location: New Milford, CT USA
Joined: December 3, 2003
 Massive rigid walls increase sound isolation, but the mass makes the bass response inside the room worse. So if you don't need isolation to the outdoors or to elsewhere in the house, you're better off making normal walls with drywall and insulation inside.

The value of non-parallel walls is greatly overrated IMO. The minimum angle to avoid flutter echo is 6 degrees on both sides, but flutter echo is easily handled with absorption. In order to deflect early reflections away from the listening position the angles need to be much more severe - at least 35 degrees. Further, if you ever plan to sell the house, a more "normal" room is a plus. But I won't try to talk you out of angles because they can help a little in some cases and they do look cool.

-Ethan

 

RE: new build room, posted on August 26, 2012 at 21:18:04
volumezero
Audiophile

Posts: 95
Location: BKK
Joined: July 7, 2004
 thanks so much again Ethan!
I would like to check out your products once I have the room built. do you have a dealer or rep. in Thailand?

 

RE: new build room, posted on August 27, 2012 at 10:03:42
Ethan Winer
Manufacturer

Posts: 1709
Location: New Milford, CT USA
Joined: December 3, 2003
 If we sold through dealers they'd double the price, which would cost even more than air shipping via FedEx. So we just ship direct, all over the world.

--Ethan

 

RE: new build room, posted on August 28, 2012 at 07:34:25
volumezero
Audiophile

Posts: 95
Location: BKK
Joined: July 7, 2004
thanks. will contact you through your website once things are underway

 

RE: new build room, posted on October 23, 2012 at 13:54:14
Retsel
Audiophile

Posts: 1242
Joined: April 17, 2000
 I have been interested in quite a while on how to configure a dedicated audio room which I will likely build next year.

I saw a post once from a guy who apparently designs sound rooms. I e-mailed him privately. He says that he will always try to design a room with nonparallel walls. He said that his ideal room was something similar to the bridge of the Enterprise with a front wall which is not as wide as the rear wall. Like you, he brought up the idea that a more radical angle near where the first reflections would bounce off the side walls and reflect to the listening position could be easily designed to avoid such reflections. He also said that the walls and floor and ceiling need not be splayed significantly to avoid flutter echo. I sketched up a room design based on this philosophy.

I have no experience designing such rooms though and I have only been gathering ideas. I also have no idea how much experience this person had which made the recommendations to me. Avoiding flutter echo does seem like a reasonable approach to take. I don't fully understand the downsides of nonparallel walls and floor and ceiling.

 

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