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Post by musicfirst on Dec 30, 2016 4:35:10 GMT
Well, hopefully the title is self explanatory. My listening room consists of a ceiling peaked in the centre. It is 8 feet high at the side walls and 9'-8" at the centre.
I have seen installations where panels have been hung horizontally, immediately below the peak and parallel to the floor, and I have seen other installations where panels have been hung in pairs, one on either side of the peak and parallel to the ceiling.
My question is, which is the better solution, one or the other or both? If I was to select only one method, which should it be?
Thanks for all your previous help.
Kerry
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Post by Hexspa on Dec 30, 2016 6:23:41 GMT
Hi, Kerry.
The rule of thumb is: "a corner is a corner is a corner."
There is validity to treating flat surfaces as well as the angled method.
Obviously, deploying twice as much treatment will have a different effect
but placement is also very important.
When in doubt, place more treatment well - works like a charm.
Also, please post small (<100kB) pics of your references.
-m
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Post by rock on Dec 30, 2016 13:28:39 GMT
I agree with Hexspa and I'll add that if the ceiling panels are between your speakers and listening position, that's a reflection area and should absorb mid /hi freqs too, so don't use FRK or membrane for panels there. Other places on the ceiling are ok for reflecting mid/hi as long as is does not reflect to the listening position.
One other possibility is two panels on either side of the peak parallel with the floor. This will give you more space at the peak. Obviously, using 2 is twice as much and since you can't have too much bass trapping...
Cheers, Rock
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Post by Nigel Spiers on Dec 30, 2016 20:14:45 GMT
Hi, This is a good question. While I don't have a definitive answer I know that peaked ceiling rooms do seem to have more reverberation issues than flat ceiling rooms. Also the reverberation is concentrated in the center of the room as opposed to the sides. We have had good success treating larger spaces with peaked ceilings such as churches, restaurants and halls with rows of 1200x600x50mm panels fixed directly to the ceiling in multiple rows down either side of the peak. It is important to leave a space all around each panel of at least 100mm because 25% of the panel absorption is from the edges. We have also tried suspending panels along the peak in a couple of studios to solve specific mode (frequency peak) problems with limited success. Despite hours of testing with the suspended panels in all positions, thicknesses and configurations we never completely solved the problem. Maybe this is more to do with the problem of completely eliminating modes and nulls in small rooms than suspended panels in peaked ceiling rooms. I know other studios use suspended panels in peaked rooms successfully - I believe Ethan Winer has done this in his studio/listening room. Best Regards Nigel Spiers www.nzacoustics.com
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Post by Hexspa on Dec 31, 2016 3:03:20 GMT
Nigel, thanks for the response. I'd love to see pics of those installs.
Forgive my assumption - the facilities treated with "direct affixation" are probably to control ambience rather than modal response. That should be kept in mind when implementing your own strategy.
My advice would be to either create a super chunk and treat your peak like any corner or do a "double wide" suspension along the ridge - as in an angled corner style.
Those are just starting points. Your mileage my vary.
-m
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Post by Ethan Winer on Dec 31, 2016 16:23:04 GMT
All good answers. In a small room panels directly under the peak works well: In a larger room putting panels there, plus on the nearby areas of the angled ceiling, helps even more. But I'd start in the center.
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Post by musicfirst on Dec 31, 2016 21:01:56 GMT
Thanks guys!
Ethan
How does one suspend the centre ceiling tiles like you show in the picture so the hangers remain invisible from the floor?
Kerry
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Post by Hexspa on Jan 1, 2017 5:28:33 GMT
How does one suspend the centre ceiling tiles like you show in the picture so the hangers remain invisible from the floor? The game is sold, never told, Kerry. -G
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Post by Ethan Winer on Jan 7, 2017 19:16:05 GMT
Kerry, those panels are my company's MiniTraps. They include mounting bars in the rear for attaching wires and other hanging methods. So for a DIY panel you need to come up with something.
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Post by rock on Jan 11, 2017 0:30:59 GMT
Ethan! DOOOON'T DOOOOO IT! (I mean: Never look down the barrel:)
Good advice for on AND off line: Respectful and polite.
In the years I've been hanging out here (and your old site), that's the only impolite incident I've noticed. Let's all just forget it happened.
Cheers, Rock
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Post by cyclecamper on Jan 14, 2017 17:26:29 GMT
I'm putting panels hanging down by one edge vertically from the peak, parallel to the ceiling. But it can consume valuable room space and make it visually less open. But my room is only half-vaulted...like a lean-to. Still being deployed, too early to measure.
Fully vaulted rooms as pictured often have "circular" standing waves (for lack of a better term) that bounce around the floor/wall/ceiling/ceiling/wall/floor(repeat, in-phase at some rather low frequency) tangentially. Theoretically, the worst stationary ones of those might be well addressed by hanging panels by their edge near the peak. Of course the corners need treatment for the more conventional modes.
Share your decisions and results when the time comes, please.
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