Frequency Plots
25% Fan Speed
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The dominant frequencies are at 40 Hz and 1.6 KHz.
50% Fan Speed
The highest spike is at 500 Hz.
75% Fan Speed
800 Hz is the peak here.
100% Fan Speed
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At full speed, the highest frequencies are in the 500 – 1.25 KHz range.
Signal Recordings
I have recorded the signals shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recordings are only offered for aural identification purposes.
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
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Proprietary connections with need of a special SW (this fan), proprietary fan connections (BQ DR Elite) with special adjusted form factor of the fans (BQ DR Elite, CM MA824 Stealth & Assassin IV) that you cannot even buy from the manufacturer, and you have to look for it on AliExpress… And people think… what an “exclusive solution” …exclusive doesn’t mean something is “cool”, but the exclusion of other options, solutions, and replacements … and people are even willing to pay more for such an “exclusivity” … when the Apple can profit on it, why wouldn’t others try the same recipe.
…sorry for grumbling, but I can help myself 😊, …by the way great review as usual.
I hope that other manufacturer will not “applemimic” themselves and will not jump on the “great ship of exclusivity” and proprietary environment.
True, exclusive parts or connectors are not always good, especially when we are talking about fans. Corsair’s idea on the Link is good, but other brands won’t follow it, so it is only for Corsair products, which are expensive (but of good quality at least).
I think you have an error in your data for the Lian Li TL fan. CFM at 25dBA should be 44.6CFM and not the 57.2 you state and mmAQ should be 1.4 and not 1.62. I checked with the data from here: https://www.cybenetics.com/index.php?option=fans&manfID=79
HTH