Quote Originally Posted by defect9 View Post
my math says it would be roughly 40db. you have to double the number of fans for each 3db increase. however, every 10x in acoustic power it will "sound" twice as loud.
That is pretty much my understanding as well. To be clear;
IF:
1x = 30dBa
2x = 33dBa
4x = 36dBa
8x = 39dBa
so on and so on.