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Author
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Topic: The Silence of the Projectors
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Manuel Francisco Valencia
Expert Film Handler
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Posts: 151
From: Oklahoma City, OK, USA
Registered: Dec 2000
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posted 05-21-2001 05:21 AM
Nifty subject title huh? But, being the operator of a P35GPS, silent projector is pretty much an oxymoron. I have heard that these are supposed to be the quietest projectors on the market. With the way some people talk about them you would imagine that they have a "stealth mode" button hidden somewhere. But this is not the case. On some of my projectors the noise is so loud that I can barely hear the monitor. I have read many posts of people speaking of them in the same way. I was just wondering if anyone has had any real success in silencing these projectors. I mean, what in the hell is making these things run so loud. TaTa H
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Randy Stankey
Film God
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Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99
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posted 05-30-2001 07:40 PM
When you have old, crummy film it does make a different sound as it runs through the projector but that sound is completely different from the usual symphony of Christie bumps and grinds.You get a "Wzzzzhhh" sound as the belts grind off the pulleys. You get a "Thunk-Thunk" sound as the teeth on the belts skip off the teeth in the pulleys. You get a "Weeeee-Weeee" sound as the bearings start to go South on you. You get a "ZZZZZZZZ" sound as the film ticks off the sprocket teeth when the tension of the sound head is too tight. You get a "Nya-Nya-Nya" sound if the pad rollers are set wrong and the film starts to go wonky. You get a "Ticka-Ticka-CHUNK" sound when the ultramittent is about to blow up on you. The sound that old, crummy film makes is more like a "Kt-t-t-t-t-t" sound. Put them all together and it goes something like this: "Wzzzzhhh-Thunk-Thunk-Weeeee-ZZZZZZZ-Nya-Nya-Ticka-Ticka-CHUNK-Kt-t-t-t-t-t" ![](http://www.film-tech.com/ubb/biggrin.gif)
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William Hooper
Phenomenal Film Handler
Posts: 1879
From: Mobile, AL USA
Registered: Jun 99
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posted 05-31-2001 12:44 AM
quote: What is sonex?
Sonex is a brand of acoustically-absorbent material designed to be hung on walls to deaden room noise. "Sonex" is often used generically to refer to any wall-mounted acoustical foam. It can be seen covering the walls of some noisy industrial installations, most broadcasting & recording facilities, & for some unknown reason, Star Trek sets. Sonex is an expensive brand; there are other manufacturers of acoustical foam. Check the Holy Grainger Catalog, or their website. Search for "acoustical foam", you'll get a number of hits like this one: http://www.grainger.com/Grainger/productdetail.jsp?xi=xi&ItemId=1611783082 Modern acoustical foams are remarkable. They'll reduce noise in a room dramatically. Hang it up. Discover that it gets warm as noise increases (where did you think the energy went, anyway?) Have fun installing it by cutting the odd-shaped pieces with an electric carving knife. Be the 12 billionth person to observe that there is male & female sonex.
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