Enermax SquA RGB White: In many ways… unusual

Results: Frequency response of sound with a hexagonal grille

Apart from the all-white design, which is rare in itself, this fan also stands out from the competition in other ways. Some of these need a cautionary finger raised, others deserve praise. Often for trying to differentiate themselves and even in a rather elegant, useful way. In the mix of everything about the SquA RGB fan, one can state its unique identity, for which it may win you over. But it also doesn’t have to.

Results: Frequency response of sound with a hexagonal grille

Measurements are performed in the TrueRTA application, which records sound in a range of 240 frequencies in the recorded range of 20–20,000 Hz. For the possibility of comparison across articles, we export the dominant frequency from the low (20–200 Hz), medium (201–2,000 Hz) and high (2,001–20,000 Hz) range to standard bar graphs.

However, for an even more detailed analysis of the sound expression, it is important to perceive the overall shape of the graph and the intensity of all frequencies/tones. If you don’t understand something in the graphs or tables below, you’ll find the answers to all your questions in this article. It explains how to read the measured data below correctly.

The sound of the 120 and 140 mm fans for the most part operates in the 70–700 Hz band. The bearings and motor operate between 1000 and 2500 Hz. Higher frequencies can be amplified by grilles or plastic filters (typically with hissing). Ignore the frequencies above 7000 Hz, these reflect electromagnetic noise from the measurement chain. This (electromagnetic noise) partially interferes with frequencies below 70 Hz as well, although there is still aerodynamic noise at these frequencies.







Why is there a missing value sometimes? There may be more reasons. Usually it is because the fan could not be adjusted to the target noise level. Some have a higher minimum speed (or the speed is low, but the motor is too noisy) or it is a slower fan that will not reach the higher decibels. But the results in the graphs are also missing if the rotor is brushing against the nylon filter mesh. In that case, we evaluate this combination as incompatible. And zero in the graphs is naturally also in situations where we measure 0.00. This is a common occurrence at extremely low speeds with obstructions or within vibration measurements.


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