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Need help quieting a projector...
Old 27th January 2010
  #1
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Need help quieting a projector...

All,

I am in the process of installing a video projector into a post production editing/mixing room. The projector will drop from the ceiling using a Draper motorized lift. However, this puts the projector in the room - complete with fan noise. I was hoping that someone here would have some experience in dealing with quieting these projectors down. Due to the shape of the ceiling line - a traditional static projector box will not really work.

Any help would be appreciated,
Randall
Old 27th January 2010
  #2
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Weasel9992's Avatar
 

Quote:
Originally Posted by quadraphonics View Post
All,

I am in the process of installing a video projector into a post production editing/mixing room. The projector will drop from the ceiling using a Draper motorized lift. However, this puts the projector in the room - complete with fan noise. I was hoping that someone here would have some experience in dealing with quieting these projectors down. Due to the shape of the ceiling line - a traditional static projector box will not really work.

Any help would be appreciated,
Randall
I used to design A/V systems for a living, so I have tons of experience...and you're going to hate my answer. If you're using a lift you have no options. If you weren't, then there are commercially available iso boxes for projectors, but nothing for a lift...at least not that I'm aware of. There are projectors out there with "whisper quiet" fans and the like, but I'm not sure whether you're willing to replace the one you've got.

Frank
Old 27th January 2010
  #3
Gear Guru
 
Ethan Winer's Avatar
 

Lightbulb

Quote:
Originally Posted by Weasel9992 View Post
There are projectors out there with "whisper quiet" fans and the like
When I got my Mitsubishi HD projector last year I was prepared to make baffles or whatever was needed to block the fan noise. Amazingly, it makes no noise at all! It's only five feet or so behind the couch, yet you can't hear it. So there are quiet projectors.

--Ethan
Old 27th January 2010
  #4
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Thank you all,

It is a BenQ W1000. Not loud but not whisper quiet...We will be doing a second room after the first is completed, so we might change at that time. We are using a fairly industrial lift that can handle up to 50lB i believe. What iso boxes are you familiar with?

Randall


Quote:
Originally Posted by Weasel9992 View Post
I used to design A/V systems for a living, so I have tons of experience...and you're going to hate my answer. If you're using a lift you have no options. If you weren't, then there are commercially available iso boxes for projectors, but nothing for a lift...at least not that I'm aware of. There are projectors out there with "whisper quiet" fans and the like, but I'm not sure whether you're willing to replace the one you've got.

Frank
Old 27th January 2010
  #5
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Weasel9992's Avatar
 

Well, I'm really not familiar with that stuff anymore. Your best bet would be to contact an A/V contractor and see what they can sell you. I know it wasn't any of the major mount manufacturers like Chief...it was an after market kind of thing. Sorry I can't be more specific.

Frank
Old 27th January 2010
  #6
Gear Guru
Quiet Fans

I have quietened many machines over time. Find out the name and spec of the fan in your projector. Buy a one with equivalent power to shift air. The figure is usually given in cubic feet per minute, CFM I think. Find an equivalent superquiet fan from Silenx, Nexus, or other specialist. You could go a step further and include a Zalman Fanmate. This would allow you to turn the fan speed down. Obviously you need to be careful about this. Fan noise multiplies dramatically with speed, so even a small speed reduction will give a large sonic one. If there is space in the projector, and you are prepared to experiment, you could try a larger fan, running slowly. I almost silenced a Fostex D2424 in that manner.

I am just about to quieten a Digidesign 192. The Silenx fan I have ordered has a noise spec of 14dBA, plus I hope to drop the speed to get about 10dBA. The original Digidesign fan is spec'd at 28dBA.

DD
Old 28th January 2010
  #7
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bitman's Avatar
Pitch the projector, use a Large LCD tv and one of these wireless video boxes.
MPG/AVI/ Internet, PPT andthing on your PC or MAC
NO DVD though, but otherwise ROCKS.

Wireless presentation, Audio Video over UTP CAT5e/CAT6 cable/AV Extender/Active baluns, Video Over IP Network, HDMI and DVI Extender over Fiber (long range)
Old 28th January 2010
  #8
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fabricaudio's Avatar
 

I would go with the fan idea, it more painful but more ''FuN'' and cheap


You can build something like a box like that,

https://www.gearslutz.com/board/4513481-post270.html




Nikolas
Old 4 weeks ago
  #9
Here for the gear
 

Can anyone suggest quieter fans for the Optoma EH500? At least the system fan. That's the loudest one, right?
I really like the image (2D and 3D). The noise is the only thing...
I love the idea of modding the fans, rather than building baffles.
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