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TOPIC: I Need Some Help

I Need Some Help 17 Oct 2000 13:08 #20900

  • poppajoe
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I would like some advice on controlling the acoustics in my theater. What's best for the ceilings, Mineral board or fiberglass ceiling tiles? Does the seating and the fact that there is or isn't any carpeting have any effect on the noise factor?
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Re: I Need Some Help 17 Oct 2000 15:15 #20901

  • Avalon
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First off, i claim no expertese on the subject. I'll just tell you what i've done/seen that worked. what seemed like the easiest fix was carpet on the walls. it was done in patterns that made it actually interesting to look at as well as functional. Curtains work, but are expensive and involve the fire dept's thumbs-up. I have acustic ceiling tiles on sections of my walls that seem to work. obviously, the less "flat" (thus unreflective) you make a surface the better and the less parallel to any other surface is good.

it took me awhile to figure out the place handles sound differently when the seats are filled than when they are not, so i started adjusting sound when the place had peopel in it -- world of difference. unless you have a "no food" policy, carpeting anything other than the aisles strikes me as just a bad idea. i think that's why the slope of the floor contributes substantially to reducing problems of sound reflection from the floor.

there is a theater in Paris where they did the walls in cinder blocks, with the holes pointing into the auditorium -- the blocks stacked on their sides, not tops and bottoms. every second hole had an insert that made it a different depth than its neighbor. looked cool and worked great.

i am obviously no expert on this, but there might be an idea or two here you can run with. good luck. my acustic probelms are an ongoing battle.
Paul Turner
Avalon Cinema
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Re: I Need Some Help 17 Oct 2000 19:34 #20902

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FYI-check the postings going back a year in this category for other discussion on noise and accoustics.
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Re: I Need Some Help 19 Oct 2000 13:25 #20903

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Just one of the reasons why this site is so great. Although it is obvious I never thought of putting carpeting on the walls. I do have, in great quantity, some deep red carpeting with black swirling patterns that would work nicely. Thank you Avalon for a great idea.
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Re: I Need Some Help 15 Jun 2001 19:27 #20904

2 things to be aware of with carpet
1 Most carpets are only firerated for floor mounting not on the walls since they have lower verticle flame spreed rateings (most are in fact very low)
2 Carpet does not have a very even frequency response for absorption It would have to be a real heavy shag to do much at lower frequencies
Soundfold by itself also has poor frequency absorption
Methods that do work is 1" ridgid fiberglass bats glued to the walls then covered with decorative cloth.
K13 a spray on material
Tectum board
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