Something is Wrong here - Alphacool Apex Stealth Metal Fan Reviewed
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Additional context: several months ago, Alphacool claimed (Nitter) they had created basically the best fan in the world, by an enormous margin.

It seems like (as many people expected), the original tests by Igor’s Lab probably aren’t representative of reality.

  • MHLoppy@fedia.ioOP
    4·
    7 months ago

    This review brings up an interesting point, where they measured that at same-dB the fan sounds better because it has greatly reduced high-frequency noise (the second half of the review focuses a lot on this). I’d be interested in a [quantitative] comparison using something like sone.

    Edit: NON-normalized spectrum analysis in Audacity (non-linear) and Spek (linear) using the +20dB audio clips: https://files.catbox.moe/h0hlvk.webp

    Same thing but RMS normalized to -20dB: https://files.catbox.moe/38ugao.webp

    These (particularly the normalized one) make it seem like the difference isn’t high frequency response (if anything the Metal has more lol), but instead reduced tonality.

  • UnfortunateShort@lemmy.world
    2·
    7 months ago

    I can imagine that in terms of acoustics, they are very good when it comes to vibrations. So maybe they are (even) better in a case. When it comes to airflow and pressure, they are very clearly not tho