Yeah wifi would be better so you can monitor remotely.
One of these came with my mother tent kit ( 4x 8 ) .. they are def quiet, and move alot of air!. Variable speed controller was included.
Get a VARIAC controller. Trust me. Youll see.
What's the difference?... or the advantage i should say.
Variac actually drops the voltage going to the fan. Typical fan controllers have a "pulse" operation. on for 1/100 of a second, off for 1/100 of a second. Thats why the fans hum at low speeds. Giving the fan full power and then no power thousands of times a minute like that makes the fan far less efficient and it wears them out faster. @Renfro and I have a thread or two where we dig into this whole thing. The variac gives a steady flow at lower voltage. cheap fan controllers work on a "pulse" system.
Cool.
Im not sure on that one.
Correct, a DC fan voltage can be controlled by a simple potentiometer. The VARIAC is a variable transformer, only AC power can be inducted through a transformer coil and into another transformer coil. The coil winding counts is the proportion.
I think the bigger question is whether or not there are any inline fans that run dc current?
I think the AC Infinity ones do but I have never used one, they seem more for personal size setups and I question their ability to cope with static pressure loss as they appear to be mixed flow type.
Yeah they are no good for pulling air though a carbon filter. I think you are right, the AC Infinity convert to dc and run on that. They come with good speed controllers though so there is no need for a variac.
They have a good speed controller and dont "whine" like all the other inline fans on a cheap speed controller.