Normalized Noise Tests
For these tests, I set the fan to speeds with noise output at the following predefined levels: 20, 25, 30, 35, 40, and 45 dBA. I skip the corresponding tests if the fan under the test cannot reach some noise levels. The speeds shown in the graph below are measured with the fan in a clear space inside my hemi-anechoic chamber without any obstacles. I set these speeds on the Longwin machine, but they change slightly due to the variable conditions that the device applies.
20 dBA Noise Output
- Mid speed
- High airflow
- Low static pressure
- High power consumption
25 dBA Noise Output
- Mid speed
- High airflow
- Low static pressure
- High power consumption
30 dBA Noise Output
- High speed
- High airflow
- Low static pressure
- High power consumption
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