Do NOT hook those Noctua fans to a standard fan controller! If you don't understand how PWM motors work, see here:
http://www.noctua.at/main.php?show=faqs&step=2&products_id=84&lng=en#7. They get plugged into your motherboard, which will control them. Just change a setting on your motherboard to have them spin a bit faster so it doesn't register them as being stalled. I have the 3,000 RPM version of both the 120mm and 140mm fans in my desktop. They are excellent. I just have the settings tweaked for them to idle at 50% and they are barely audible from 3 feet away. 40% will make them inaudible completely. 68 degrees ambient, with a stack of 8x7,200 RPM HGST 2TB drives on top of each other in the drive cages, and my warmest drive among them is 28C. The coolest drive is 24C. I also have them mounted with rubber mounts, so when they get turned up to higher RPMs there is no vibration noise, just noise from the air movement.