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Sloped Ceiling...how does it affect things?
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tensegrity
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7th February 2013
Old 7th February 2013
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Smile Sloped Ceiling...how does it affect things?

Hey guys,
My ceiling is sloped as you can see in the image i made. Since it's not exactly parallel to the floor i'm wondering how this will affect room modes/reflections and all that jazz. Is this actually better for sound?

Will i still need bass traps on the ceiling with this slope?

Thanks!

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7th February 2013
Old 7th February 2013
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Good

Some more information will be needed.
The height increment is 8 inches but over what distance? Room length.
LWH dimensions and what is each boundary made of? e.g. Concrete, sheetrock on studs?
If the speakers at at the 106 wall, the slope may be useful in terms of redirecting HF reflections from overhead towards the back, away from direct line of fire on the listening position.
Also it may prevent flutter echoes between floor and ceiling.

There are guesses knocking around as to how much slope will prevent significant flutter, but it is a grey area. I have seen 12 degrees mentioned a few times.

In terms of LF, the slope is of little consequence. Modes will appear between floor and ceiling because big long LF waves won't notice that slope.

DD
tensegrity
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7th February 2013
Old 7th February 2013
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Hey Dan, here are some updated images. Hopefully this helps illustrate it better.

The 2D drawing is looking directly 'down' the length of the room towards the front wall.

It's just regular drywall/studs. Hopefully this helps. Thanks again.



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7th February 2013
Old 7th February 2013
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Odd

That's a surprise.
I reckon you are best sticking with the speakers at the short wall.
Regarding the cloud, I would also stick with standard recommendations.
The more of it there is and the thicker, the better. A thick cloud with a decent airgap will have a go at the vertical modes. Plus deal with any nasty HF reflections.

DD
tensegrity
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7th February 2013
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Yeah, i'm on the top floor of my building, so the roof makes my ceiling a bit funky. I'll stick to the standards then, thanks.
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7th February 2013
Old 7th February 2013
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Quote:
Originally Posted by tensegrity View Post
My ceiling is sloped as you can see in the image i made. Since it's not exactly parallel to the floor i'm wondering how this will affect room modes/reflections and all that jazz. Is this actually better for sound?
You're already in good hands with Dan, so I'll just address this. A small angle like that is not a problem or a benefit. And Yes, of course you still need bass traps.

--Ethan

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