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[APD] Hush hush pump, fan

I made a sound-reducing enclosure for my new Little Giant external pump, 
much better now. Now the cooling fan for the pump is the noise-maker, but 
at a much lower level. It's a leftover 4" AC computer fan I had lying 
around. Can an AC fan be speed-controlled, like maybe with a light dimmer? 
I probably know the answer to this one, but maybe...

BTW, 3/4" plywood internally lined with acoustic ceiling tile makes a 
pretty good sound reducing enclosure. Offset the fan with a baffle in 
between it and the pump.


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