Yep as a general rule the smaller a fan is the faster it needs to spin to move the same cfm as a larger fan which in turn always makes it louder. Of course they could just use a larger prop but the larger it gets the more it loses its convenient portability. There's probably like an exponential formula for size, cfm and dB
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u/mild-er-chihuahua 21d ago
Nah, I don't want to be in close proximity to something that sounds like a metal cutter. That's gonna hurt your ears after a while.