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dBA (noise) question
OK, lets say I have a device that has fans and the decibel level is 66.
If I replace the current fans with two rated at 36 dBA what's worst case total dBA.
In theory if they are in sync I could end up with 72 dBA total?
Or theoretically I could hang a fan speed controller on one and get them out of phase so they cancel each other out?
Educamate me.
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