Frequency Plots
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
At 75% and full speed, the noise increases in the 400-1000Hz range. This range has parts in the low midrange (250-500Hz) and midrange regions (1-2KHz). High noise in the midrange region is annoying for most.
Signal Recordings
I have recorded the signals shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recordings are only offered for aural identification purposes.
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
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