Fan Orientation question + Fan question

[soulesschild]

Is it possible to put my 3 MCR320 Yateloons med speed onto one fan channel on the Scythe Kaze 5.25 Fan Controller? It says 1A max draw, the each yate loon is 0.3A. But would I be able to adjust the voltage accordingly? I ask because I plan to have 3 yates, 2x S-Flex, most likely 1 on each fan controller, and another empty fan control that might control my ATCS 840 front 230mm intake fan. But ideally I'd like to have the 3 yates on one knob and be able to run them undervolted and at medium voltage.

Do most people here prefer drawing cold air outside the case from the top vs exhausting hot air from the case out the top of the case?

I'd want to ideally exhaust the air out due to dust control issues, but I know it's probably not as great in performance vs drawing cold air in. Are there fan filters for rads?

 

[Kazappin]

I have a scythe kama-meter (4 fan controller) running 4 yate loon medium speeds at max and min RPM fine, I wouldn't think it'd be a problem in your setup.

I prefer to exhaust hot air out of the top; bringing in cool air means the air (when heated, will want to go up) will have to find another way to go. Usually means more side/back exhausting fans. A fan blowing hot air out effectively draws most of the heat straight out of the case, the way the hot air wants to move.