Frequency Plots
10% Fan Speed
There is a frequency spike at 50 Hz, but this is noise from the electricity network.
25% Fan Speed
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- Mains frequency: 50 Hz
- Peak frequency: 800 Hz
50% Fan Speed
- Peak frequency: 400 Hz
75% Fan Speed
- Peak frequency: 800 Hz
100% Fan Speed
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- Peak frequency: 250 Hz
- 2nd Peak frequency: 200 Hz
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.
10% Fan Speed
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
Pages:
Tests show the white Silent Wings 4 140mm is noisier than the black version?
Epilogue
The high-speed version of the be quiet! Silent Wings 4 120mm
-> typo: should be 140mm
True.