You’ve already seen the tests of the Endorfy Corona 120 fans, and now we’re adding results for the “reverse” variants. The aerodynamic design is essentially the same—just… reversed. The emphasis on visual appeal is therefore even stronger. The colorful lighting is complemented by an element intended to make the result even more striking. You won’t see the stator struts interfering with the appearance.
Results: Airflow through a thinner radiator
Why is a value sometimes missing for a fan? There can be several reasons. Most commonly, it’s because the fan couldn’t be regulated to the target noise level. Some fans have higher minimum RPM (or they spin slowly but have an excessively noisy motor), or they are simply slower models that can’t reach higher decibel thresholds. Results are also omitted from graphs if the impeller scrapes against the mesh of a nylon filter. In such cases, we classify the combination as incompatible. And of course, a zero in the graphs naturally appears in situations where we record an actual 0.00. This often occurs at extremely low speeds when obstacles are present or during vibration measurements.
Spectrograms of „45 dBA“ without obstacles:
The reverse model is already “acting up” here too (on some obstacles, those tonal peaks are even higher), but the standard variant, in exchange, has more noise distributed across other sound frequencies. 🙂
Could you also note the RPMs alongside the sound normalization tests? That would be helpful so we can determine whether if fans reached the RPMs where vibration increases.
First of all, thank you for the suggestion. Logging fan speeds on obstacles would certainly be useful, but I have to repeat what I mentioned somewhere before: due to capacity constraints, we simply can’t manage it. At this point, it’s beyond our means to further increase the time demands of the testing process. Sorry about that. :/