Normalized Noise Tests
For these tests, I set the fan to speeds with noise output at the following predefined levels: 20/25/30/35/40/45 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 slightly change because of the variable conditions that the device applies.
30 dBA Noise Output
Because of the double ball bearing and the fan’s design, the max RPM at 30 dBA is low. This doesn’t leave much room for increased performance.
35 dBA Noise Output
Despite the low RPM, the static pressure is competitive. this is not the case for the airflow, though.
40 dBA Noise Output
Airflow is low, but static pressure is pretty high.
45 dBA Noise Output
Airflow is lower than the competition’s results, but the static pressure is increased.
