If you compare the absolute values with those of the reference, you can often hear a bit more of the operating noise, especially on radiators. However, the be quiet! Silent Wings 4 there also really good. Pressure creates counterpressure, also at the ears. Which brings us to a small peculiarity. When running on the 25 mm radiator, we hear a slight humming at about 1600 rpm, among other things, but you can certainly live with that. It’s not extreme, as the audio examples prove.
For the comparison with the Phanteks T30, please slide the orange slider in the graphic to the desired position to the left
Sound comparison (recording) at all speeds
As just mentioned, the subjective sensation is a somewhat clearer noise from the motor and the rotor blades, which is of course also due to the different speeds. The fan produces significantly more motor noise, and the tearing noise at the rotor blade edges is also audible.
Case fan
25 mm radiator
45 mm radiator
60 mm radiator
If the speakers have survived the whole thing up to this point, we’ll now go into more detail.
Frequency spectrum in the housing
Let’s look at the frequency analyses of all measurements and all three tested speeds. The graphs speak for themselves, as there are hardly any disturbing peaks that lie outside the expected speed ranges for bearings and rotor blades.
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