Sound noise from fans
- Thread starter zeroxx
- Start date
HeartlandHank
Well-Known Member
Vortex... buy fans double the size needed then turn down with a speed controller... whisper quiet.
Need 300 cfm moved? Buy a Vortex 747 and turn it down to about 1/2.
Need 300 cfm moved? Buy a Vortex 747 and turn it down to about 1/2.
damn them fans look amazing and just what am looking for deffo gonna need speed controller for turning it down maybe bit much for what i was planing the now but a lot of future potential in there if i buy that. and if they whisper then
i'm a happy chappy 
thanks for the reply guys.
i'm a happy chappy thanks for the reply guys.
HeartlandHank
Well-Known Member
Yeah, the fact that you can always use it for larger project later is a plus.
For short term though, when you turn a fan down 50% it is much much more quiet.
350 cfm going through a 6 inch fan sounds like a wind tunnel... 350 going through an 8 inch is much much more quiet.
It's not that vortex is quiet. It's that a large fan ran at a slow speed is quiet.
For short term though, when you turn a fan down 50% it is much much more quiet.
350 cfm going through a 6 inch fan sounds like a wind tunnel... 350 going through an 8 inch is much much more quiet.
It's not that vortex is quiet. It's that a large fan ran at a slow speed is quiet.
BigNick420
Member
You can buy an air duct muffler from Home Depot I believe. Hang them both from the ceiling with those black rubber straps.
rory420420
Well-Known Member
Bungee cords hung from eye hooks..crank a 12in fan all the way and all you'll hear is 'shhhhhhhhh'...
Indagrow
Well-Known Member
that was exactly what i had to say, suspend if from an elastic material.. it will absorb the vibrations.. this is much like they do in commercial air ducts only they suspend if from a steel rod with springs in it.. also used in marine engineering for sound detention as in subs.
hyroot
Well-Known Member
J just saw the sickest stand up fan. I know you all are talking about inlines. Dyson makes a bladeless fan. It kicks and is very quiet. Its just rediculous in price. $450. First time I ever seen one of those in person.
I like the c.a.p. inline fans. Half the price of vortex and has a 5 year warranty. Runs maybe 5 cfms less than vortex. So if you buy another one 5 years later. You will have spent the same as one vortex (10 year warranty).
I like the c.a.p. inline fans. Half the price of vortex and has a 5 year warranty. Runs maybe 5 cfms less than vortex. So if you buy another one 5 years later. You will have spent the same as one vortex (10 year warranty).
Indagrow
Well-Known Member
yeah im waiting for a smaller version of the blade less.. finally a safe mechanical blow job
good idea bro ill be trying this one out myself hate the hum of all that shit while trying to sleep some times i wear ear plugs if i cant sleep
HeartlandHank
Well-Known Member
Yeah the hum is annoying. I still sit my fans on surfaces... one sits on the roof of a flower tent.. two sit on insulation in the attic. one is suspended for convenience.
I wrap my fans in soft material. The ones in the attic are wrapped with old pillows duct taped around them. It looks pretty shitty but no vibrations and it absorbs the wind noise too. The one on the tent is wrapped in duct insulation.
What I'm saying is, ime, insulating the fan sitting on a surface that is not hard works better for the vibration and does more for mechanical and wind noise.
of course, depending on your setup hqnging might be more cinvenient.
even if you do hang though... insulating the fan will help with noise.some people build boxes around the fan and insulate... you czn use blankets, pillows, duct indulstion, whatever.
The large fan turned down though... that is key. I've ran 4,6,8 and 10 in fans in many different ways. Large fan with lower speed is going to do more for the win and mechanical sound than anything;;
Also, usig all insulated ducting makes a difference.
I wrap my fans in soft material. The ones in the attic are wrapped with old pillows duct taped around them. It looks pretty shitty but no vibrations and it absorbs the wind noise too. The one on the tent is wrapped in duct insulation.
What I'm saying is, ime, insulating the fan sitting on a surface that is not hard works better for the vibration and does more for mechanical and wind noise.
of course, depending on your setup hqnging might be more cinvenient.
even if you do hang though... insulating the fan will help with noise.some people build boxes around the fan and insulate... you czn use blankets, pillows, duct indulstion, whatever.
The large fan turned down though... that is key. I've ran 4,6,8 and 10 in fans in many different ways. Large fan with lower speed is going to do more for the win and mechanical sound than anything;;
Also, usig all insulated ducting makes a difference.