Quote:
Originally posted by myv65
Doubling sound power (by doubling the quantity of fans) increases sound by 3 dBA. This rule of thumb
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You are right about the doubling of the fan's.
I should have written "doubling" instead of adding"
When dealing with low noise fan's (below 20 dbA) the rule does not apply. also with loud fans (above 50dbA) the 3 dbA won't work.
but, what are we talking about
going with 20dbA fans from 1 to 8 will give 26.6 dbA, or for the thumb rule 29 dbA.....
