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.
All the following performance descriptions are based on the products included in the respective graphs.
20 dBA Noise Output
- Mid speed
- High enough airflow
- Above-average static pressure
- Average power consumption
25 dBA Noise Output
- Mid speed
- High enough airflow
- Mid static pressure
- Average power consumption
30 dBA Noise Output
- High speed
- High enough airflow
- High enough static pressure
- Average power consumption
Pages:
