S
sweetestsin420
1
-
Happy Birthday ICMag! Been 20 years since Gypsy Nirvana created the forum! We are celebrating with a 4/20 Giveaway and by launching a new Patreon tier called "420club". You can read more here.
-
Important notice: ICMag's T.O.U. has been updated. Please review it here. For your convenience, it is also available in the main forum menu, under 'Quick Links"!
Most of the noise you're hearing is from the rushing of air past objects. The slower the air, the less noise it makes.
The fan silencer slows down the air so it's moving slower when it exits the ducting. Yes, two mufflers hooked together will work, as long as they connect to each other without gaps.
It's ducting... metallic tape, screws in the ceiling and wires to hold it up.
Stay Safe!
The fan silencer slows down the air so it's moving slower when it exits the ducting. Yes, two mufflers hooked together will work, as long as they connect to each other without gaps.
It's ducting... metallic tape, screws in the ceiling and wires to hold it up.
Stay Safe!
S
sweetestsin420
1
I sent u pictures of how to run your ducts ,if I remeber ?,.... having Issues Sweet E ?
like HYdrosoil said its the speed of air , get a dial down fan controller then u control speed of air ,...
TS
like HYdrosoil said its the speed of air , get a dial down fan controller then u control speed of air ,...
TS
you should only need 1 for the intake. I have never seen a fan with 2 installed like that. I think you can get the same noise reduction from a fan speed controller. Using a muffler will reduce the CFM drasticly this is why it sounds quit.. At least with a controller you can adjust it as necessary...
Intake? You don't really want to set up a muffler on your intake. More ducting before the fan will cut down on intake noise. Plus the below:
I use cardboard boxes fitted with furnace filters... 2 cheapies and then a $20+ high-micron. Cut hole to fit size ducting on other side. Great, wide-area, intake for your ducting, slows down the incoming air a bit also.
Stay Safe!
I use cardboard boxes fitted with furnace filters... 2 cheapies and then a $20+ high-micron. Cut hole to fit size ducting on other side. Great, wide-area, intake for your ducting, slows down the incoming air a bit also.
Stay Safe!
newbie with these mufflers never used one. Just read about them... I just pulled up this one says it will not reduce the airflow. If you need to reduce your noise level these will do it. I have never seen one wit h1 on the input side and 1 on the output side that's what I what I meant..
Connect them to your fan and ducting and reduce your noise output by up to 25dba without reducing airflow. It doesnt say what end to install it on input, output??
http://www.virtualsunhydroponics.com/Agricultural/products/760008.asp
Connect them to your fan and ducting and reduce your noise output by up to 25dba without reducing airflow. It doesnt say what end to install it on input, output??
http://www.virtualsunhydroponics.com/Agricultural/products/760008.asp
Another alternative to duct mufflers is the ability to go instantly silent remotely in an emergency.
I could never get the fans as quiet as I wanted, so I just got used to them, but I still needed a way to make them silent if someone was over(landlord, or anyone who doesn't know, which should be everybody else) so I got a remote controlled outlet.
You plug you fans into it, and then place the remote somewhere discreet, but easy to access in a stealthy manner.
I had mine placed under some molding on the way to the room, so I could look like my hand was just resting on the molding, while I was pushing the button to kill the fans before we ever got close enough to hear them.
The thing works from over 50 feet away through multiple walls with no wires.
Just don't forget to turn them back on after the people leave.
Done that a couple times, lol.
I could never get the fans as quiet as I wanted, so I just got used to them, but I still needed a way to make them silent if someone was over(landlord, or anyone who doesn't know, which should be everybody else) so I got a remote controlled outlet.
You plug you fans into it, and then place the remote somewhere discreet, but easy to access in a stealthy manner.
I had mine placed under some molding on the way to the room, so I could look like my hand was just resting on the molding, while I was pushing the button to kill the fans before we ever got close enough to hear them.
The thing works from over 50 feet away through multiple walls with no wires.
Just don't forget to turn them back on after the people leave.
Done that a couple times, lol.
Attachments
I like the remote control option. You dont need to run into the room to shut things down.Might get one of those myself. My scrubber is loud. Thats the only thing we can here running. My pops comes over he says whats that noise in the bathroom lol...
Last edited:
J
JimmyRow
https://www.icmag.com/ic/picture.php?albumid=41331&pictureid=978296
Here's a shot of kit kat's fan filter and silencer.
Yet to use one of the mufflers, but they're gonna be my next investment. Talked to a number of folks that swear by em.
I also like the remote shut down. I can think of a couple applications for this product. puff-thanks for the info.
Here's a shot of kit kat's fan filter and silencer.
Yet to use one of the mufflers, but they're gonna be my next investment. Talked to a number of folks that swear by em.
I also like the remote shut down. I can think of a couple applications for this product. puff-thanks for the info.
from ad:
Doesn't make sense. Neoprene is a closed cell foam - no such thing as acoustical neoprene. 25 dB reduction with no reduction in airflow? 3 dB is detectable. 6 dB is perceived as 1/2 as loud. 25 dB is fantastic since dB is a logarithmic scale. The only thing it could really be is neoprene fins baffling the air and slowing it down. Slowing air will reduce noise AND increase wear on the motor. A speed control seems like a much better idea. Cheaper too. Not all fan motors will work with all controllers though.
Exactly.
You know it's not always going to be possible to rush into the room in a surprise situation, so that's another nice thing about them, you don't need to be anywhere near the room to use it.
I have two.
I plug all my fans into an outlet strip, and then plug the strip into the remote controlled outlet.
I have a second one I use for my AC in the summer(which howls like a banshee)
I mounted the remotes in a little hall you have to pass through to get to where the room is, but still about 30 feet away.
You could be standing right next to me and never tell I was pushing the button.
JuC
Active member
sorry i'm not a native speaker, hope you can understand me anyway.
it's very easy to build your own silencer for little €/$ !
you need:
-a tube with the diameter of your exhaust system (PE, metal....material doesn't really matter. you can even use plastic film but that's not so easy to work with)
-some rockwool
-a tube with bigger diameter than the first one. (10cm more diameter is perfect)
you need to drill a lot of holes in the smaller tube (or purchase a perforated one...), wind the rockwool around the perforated tube (about 5cm thick), and cover that with the bigger tube. then seal the space between the tubes at both ends, that no air escapes where it shouldn't.
the air will move straight trough the inner tube, but the sound will reflect, goes through the holes and is absorbed by the rockwool.
the longer you choose the tubes, the more effective your silencer will be
sorry i can do some smalltalk in english but i don't know if my "technical description" is understandable
feel free to ask if you didn't get it, i'll try my best...
edit: best you use 2 of them. one between fan and carbon filter, the other on the exhaust side. silencer-fan-silencer.
it's very easy to build your own silencer for little €/$ !
you need:
-a tube with the diameter of your exhaust system (PE, metal....material doesn't really matter. you can even use plastic film but that's not so easy to work with)
-some rockwool
-a tube with bigger diameter than the first one. (10cm more diameter is perfect)
you need to drill a lot of holes in the smaller tube (or purchase a perforated one...), wind the rockwool around the perforated tube (about 5cm thick), and cover that with the bigger tube. then seal the space between the tubes at both ends, that no air escapes where it shouldn't.
the air will move straight trough the inner tube, but the sound will reflect, goes through the holes and is absorbed by the rockwool.
the longer you choose the tubes, the more effective your silencer will be
sorry i can do some smalltalk in english but i don't know if my "technical description" is understandable
feel free to ask if you didn't get it, i'll try my best...
edit: best you use 2 of them. one between fan and carbon filter, the other on the exhaust side. silencer-fan-silencer.
Beautiful.
Perfectly understandable and useable. Thanks for your input.
Stay Safe!
Perfectly understandable and useable. Thanks for your input.
Stay Safe!
S
s00thsayer
i use a variac variable transformer to quiet my centrifugal duct fan. it cut the noise down significantly in my setup. variable transformers don't make fans hum like the cheap speedster fan controllers.
http://www.amazon.com/Variac-Variable-Transformer-300va-Output/dp/B006NGI8VS
http://www.amazon.com/Variac-Variable-Transformer-300va-Output/dp/B006NGI8VS
N
noyd666
hi sweety, have read works best with two, if your broke [ no money] wrap and tie something around it, ithink the noise of air rushing through shits everybody off, 2 of those silencers are about 180 bucks here,
Kit Kat
Member
Since Jimmy already posted a pic of my vert tent with the Phresh 8" muffler in it, here's a repost from my first thread where I built one:
S
sweetestsin420
1
N
noyd666
insulating ducting is very good cuts out a lot of noise , but is heavy, if you cut into ends and expose fibre glass fold it back in side and tape edges,
S
sweetestsin420
1
