my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Exhaust Fan Recommendations

Author Topic: Exhaust Fan Recommendations Don Furr Jedi Master Film Handler Posts: 509 From: Sun City, Ca USA Registered: Nov 2002 posted 04-06-2018 02:43 PM                     Problem: Super LumeX lamp with a 1600 watt bulb. Dayton Axel fan mounted on top of the lamp stack moving 240 CFM. Lamphouse stays cool but the noise from the fan is TOO loud. It's got that high pitch racket that in a quiet scene I can hear the fan from the screening room. I purchased a nice 6" exhaust fan from HD moving over 500 CFM. The problem with it was the noise level. I need a adequate fan than can be mounted on the outer wall of my booth that won't keep the neighbors awake!! Any brand name recommendations for a quiet fan motor. I've already got a 4" pipe going through the wall that I can use a 6" to 4" adapter. This fan is under cover on the lanai so with the low humidity here in SoCal I'm not concerned with the elements getting in the motor.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 04-07-2018 01:36 PM                     Dayton blowers are just awful things! The motors they supply now are Chinese and not even ball bearing. I stopped using all other fans and switched to Fantech about ten years ago. An FG-8XL would work well and if you get their isolation mount, then that will help lower any noise level and even minor vibrations, although the fans are very, very quiet and extremely smooth running and well balanced as they come. You could also remotely locate the fan somewhere out of the projection room. I have used alumnium tape and taped them directly to the top of digital projectors and lamphouses in emergency's. You could also get an adapter 8" to 6" at Home Despot or Lowe's that will get it up off the projector about 8". Mark Fantech Specifications  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 04-07-2018 03:17 PM                     I second the Fantech type inline blower. Very quiet, low vibration. There are many other suppliers, you can get them at any HVAC supplier... or hydroponics shops sell them.  |  IP: Logged Gary A. Hoselton Film Handler Posts: 59 From: Portland OR U.S.A. Registered: Nov 2005 posted 04-11-2018 01:24 PM                     Don, I had same problem, invited an acoustic engineer to give advice. Result is Flexmaster 6B acoustical insulated flexible duct (my projectors on rails to slide sideways, Super LumeX with 2000w bulbs and 3-blade shutters) to 300cfm wall-mount fans mounted on outside of exterior wall. Fan was German as I recall, can look for info if you want. Then, changed booth ceiling tile to Armstrong Optima 1" thick fiberglass with noise coefficient 0.95, and hung Simplex vinyl strip door on stairway from booth to auditorium. Things really quieted down, and engineer only charged $175 and one screening, a real blessing.  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 04-11-2018 02:09 PM                       I've used Flexaust Polyester Hose on the output of Fantech fans and/or from the lamp to fan and had dramatic improvement in noise. This is a heavy duty Polyestar hose that feels like canvas and bit difficult to use but it has quite a muffling effect. I used it for a DLP Barco in a blimp in a Planetarium with no access to exhaust the air (green building) so ran 50 feet around the back of the screen, hung off the sprinkler pipes. It effectively spread or diffused the air noise to the point where it was not noticeable.  |  IP: Logged Buck Wilson Jedi Master Film Handler Posts: 894 From: St. Joseph MO, USA Registered: Sep 2010 posted 04-11-2018 03:32 PM                     x4 on fantech. The fans themselves are nearly silent, and the air noise can be muffled with duct mufflers if it's vented into the booth or otherwise through a short run of duct. The longer the duct, the quieter the exhaust air is.  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.