Even on the lowest setting there are times when the fan pulls more air and is noisier than I'd like. Anyone know of a way to lower the speed?
see ya
ken
Hi Ken - What about a rheostat?
It's just a DC motor. Adding a series resistor will drop a few volts for you. Make sure it is rated for enough power to handle the voltage drop and current.
If you measure the voltage and current at the motor, I will be happy to aid in the resistor selection. A rheostat instead of fixed value resistor might be best so you can fine tune it.
The manufacturer probably set the minimum voltage a bit high to make sure it starts and continues to run at the lowest setting.
You can use a PWM dc motor speed control. A pulse width modulation controller creates very little heat and uses less current to run the motor at slower speeds. Similar to this one at Amazon for $13.
KEEDOX? NEW 6V-90V 15A DC Motor Pump Speed Controller: Amazon.com: Industrial & (http://www.amazon.com/KEEDOX-xFFFD-6V-90V-Motor-Controller/dp/B00CW82ZPG/ref=sr_1_1?ie=UTF8&qid=1385006618&sr=8-1&keywords=pwm+dc+motor+controller)
It is a 15 amp controller. A lower amp one would probably work for this fan. You can find then for under $10.
Roger