Frequency Plots
Min Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
400 Hz is the dominant frequency at lower speeds.
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.
Min Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
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