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Scott Dorsey Scott Dorsey is offline
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Default how much noise will three 8dB(A) fans make?

Audix Unavailable wrote:

Don't forget that the 8dB(A) spec is probably utter marketing
bull****. If you can hear one operating 1 metre away it certainly
isn't 8dB(A).


And even if it isn't bull****, as soon as you put the fan in the cabinet
where there is turbulant airflow, the noise from that will be louder than
the noise of the fan itself.

I have personal experience of so called 8dB(A) computer fans that
(when suspended in free air) could be heard 6 metres away in a very
quiet domestic room. The room on its own measured 23dB(A) with a
calibrated class 1 precision sound level meter. Fans were of Chinese
origin and were 1500 rpm 60x60mm type.


That seems about typical. Certainly no more inaccurate than the 9dBA
noise floor that Feilo claims of their microphones.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."